FEDERAL LAW ON METROLOGY AND STANDARDIZATION
Latest Reform DOF 12-18-2015

CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

FEDERAL LAW ON METROLOGY AND STANDARDIZATION
New Law published in the Official Journal of the Federation on July 1, 1992
CURRENT TEXT
Latest published reform DOF 12-18-2015
On the margin, a seal bearing the National Coat of Arms that reads: United Mexican States.- Presidency of the Republic.
CARLOS SALINAS DE GORTARI, Constitutional President of the United Mexican States, to the citizens of the country,
be acknowledged:
That the Congress of the United Mexican States has sent me the following
DECREE"THE CONGRESS OF THE UNITED MEXICAN STATES HEREBY DECREES:FEDERAL LAW ON METROLOGY AND STANDARDIZATIONFIRST TITLESINGLE CHAPTER
General Provisions
ARTICLE 1.- This Law will be in force all throughout the Republic and its provisions are public and for social interest. Itsapplication and surveillance are under the responsibility of the Federal Executive Branch, through the agencies of the federal
public administration with competency on the subjects regulated in this Law.
Whenever the Secretariat is mentioned in this Law, this will be understood as meaning the Secretariat of Economy.
Reformed paragraph DOF 07-28-2006
ARTICLE 2.- The purpose of this Law is:
I. On Metrology matters:a) To establish the General System of Measurement Units;b) To specify the essential concepts on metrology;c) To set forth the requirements for the manufacturing, import, repair, sale, verification and use ofmeasuring instruments and measurement standards;d) To set forth the mandatory nature of measurement in trading transactions and of indicating the netcontent in packed products;e) To establish the National Calibration System;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015f) To create the National Metrology Center as a body with high technical level on this matter; andg) To regulate, generally, all other matters related to metrology.
II. Regarding standardization, certification, accreditation and verification:a) To foster transparency and efficiency in the preparation and observance of Official Mexican Standards
and Mexican Standards;b) To establish the National Standardization Commission to contribute to the activities regarding
standardization under the responsibility of the different agencies of the federal public administration;c) To establish a uniform procedure for the preparation of Official Mexican Standards by the agencies ofthe federal public administration;d) To promote the concurrence of the public, private, scientific and consumer sectors in the preparationand observance of Official Mexican Standards and Mexican Standards;e) To coordinate the activities for standardization, certification, verification and testing laboratories of theagencies of the federal public administration;f) To establish the national accreditation system for standardizing and certifying bodies, verification units
and for testing and calibration laboratories; andg) In general, to disseminate standardization actions and any other related activities.
ARTICLE 3.- For the purposes of this Law, the following terms will have the assigned meanings:
I. Accreditation: The act by means of which an accreditation entity acknowledges the technical competency and reliability of
the certifying bodies, testing laboratories, calibration laboratories and verification units for conformity evaluation;
Reformed section DOF 05-20-1997
II. Calibration: The set of operations meant to determine the errors of a measuring instrument and, if necessary, othermetrological characteristics;
III. Certification: A procedure by means of which it is ensured that a product, process, system or service meets the standards,
guidelines or recommendations of national or international standardizing bodies;
IV. Agencies: The agencies of the federal public administration;
IV-A. Conformity evaluation: The determination of the degree of compliance with Official Mexican Standards or conformity
with Mexican Standards, international standards or other specifications, prescriptions or characteristics. It includes, among others,
the sampling, testing, calibration, certification and verification procedures;
Added section DOF 05-20-1997
V. Measuring instruments: The technical media with which measurements are taken, and which include the materializedmeasures and measuring devices;
VI. Measure (to): the act of determining the value of a magnitude;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATION
Latest Reform DOF 12-18-2015

CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

VII. Materialized measure: the device intended to permanently reproduce, during use, one or several known values of a given
magnitude;
VIII. Manifestation: The statement made by an individual or legal entity to the Secretariat regarding the measuring
instruments that are manufactured, imported, used or that are intended to be used within the country;
IX. Method: The way to perform a process operation, as well as its verification;
X. Mexican Standard: The one prepared by a national standardizing body, or the Secretariat, under the terms of this Law,
which provides, for common and repeated use, rules, specifications, attributes, testing methods, guidelines, characteristics orprescriptions applicable to a product, process, facility, system, activity, service or production or operation method, as well as
those related to terminology, symbology, packaging, marking or labeling;
Reformed section DOF 05-20-1997
X-A. International Standard or guideline: The standard, guideline or normative document issued by an international
standardizing body or other international body related to such matter, recognized by the Mexican government under the terms ofinternational law;
Added section DOF 05-20-1997
XI. Official Mexican Standard: The technical regulation of mandatory observance, issued by competent agencies, inaccordance with the purposes set forth in Article 40, which establishes rules, specifications, attributes, guidelines, characteristics
or prescriptions applicable to a product, process, facility, system, activity, service or production or operation method, as well as
those related to terminology, symbology, packaging, marking or labeling, and those which refer to their compliance orapplication;
Reformed section DOF 05-20-1997
XII. Certifying bodies: The legal entities dedicated to certification functions;
XIII. National standards bodies: The legal entities dedicated to prepare Mexican Standards;
XIV. Standard: Materialized measure, measuring device or measuring system aimed to define, perform, keep or reproduce aunit or one or several known values of a magnitude to transmit them by comparison to other measuring instruments;
XV. National standard: the authorized standard to obtain, fix or contrast the value of other standards of the same magnitude,
which are the basis for fixing the values for all standards of the given magnitude;
XV-A. Accredited people: The certifying bodies, testing laboratories, calibration laboratories and verification units
recognized by an accreditation entity for conformity evaluation;
Added section DOF 05-20-1997
XVI. Process: The set of activities related to production, procurement, development, manufacturing, preparation, storage,
mixing, conditioning, packaging, handling, assembly, transport, distribution, storage and dispensing or supply of products andservices for the public;
XVII. Verification unit: The individual or legal entity that performs verification acts; andReformed section DOF 05-20-1997

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

XVIII. Verification: The visual ascertainment or verification by means of tracking, measuring, laboratory testing or document
examination that are performed to evaluate conformity at a given moment.
Added section DOF 05-20-1997
XIX. (Abrogated)
Abrogated section DOF 05-20-1997
ARTICLE 4.- The Secretariat, in coordination with the Secretariat of Foreign Affairs and under the terms of the Organic Lawof the Federal Public Administration, will represent the country in all events or matters related to metrology and standardization atinternational level, notwithstanding that in such representation and in accordance with their attributions, other interested agencies
may participate, by virtue of their competency, in coordination with the Secretariat itself. Representatives of public and privatebodies may also participate, upon prior invitation by the Secretariat.
TITLE TWOMETROLOGY
CHAPTER I
General System of Measurement Units.
ARTICLE 5.- In the United Mexican States, the General System of Measurement Units is the only one that is legal and of
mandatory use.
The General System of Measurement Units is composed, among others, by the basic units of the International System ofUnits: for length, meter; for mass, kilogram; for time, second; for thermodynamic temperature, kelvin, for electric current
intensity, ampere; for light intensity, candela; and for substance quantity, mole, as well as the supplementary ones, the ones
derived from base units and their multiples and submultiples, approved by the General Conference on Weights and Measures, andwhich are provided for in Official Mexican Standards. It is also integrated with those not included in the international system andwhich are accepted by said body and included in those codes.
ARTICLE 6.- Exceptionally, the Secretariat may authorize the use of measurement units from other systems due to their
being related to foreign countries that have not adopted the same system. In such cases, their equivalence with that of the General
System of Measurement Units shall be expressed together with the units of other systems, unless the Secretariat itself provides an
exemption for this obligation.
ARTICLE 7.- The base and supplementary units, as well as those derived from the General System of Measurement Units
and their symbology will be consigned in the Official Mexican Standards.
ARTICLE 8.- Official and private schools that are part of the national educational system shall include in their syllabus theteaching of the General System of Measurement Units.
ARTICLE 9.- The Secretariat will be in charge of preserving the national prototypes of measurement units, meter andkilogram, assigned by the International Bureau of Weights and Measures for the United Mexican States.
CHAPTER II
Measuring Instruments

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FEDERAL LAW ON METROLOGY AND STANDARDIZATION
Latest Reform DOF 12-18-2015

CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

ARTICLE 10.- Measuring instruments and standards manufactured in the national territory or that are imported and subject
to an Official Mexican Standard require, prior to their being marketed, the approval of the model or prototype by the Secretariat
notwithstanding the attributions of other agencies. Measuring instruments and standards shall comply with the provisions of thisarticle when they are used as the base of or are used for:I. A trade transaction or to determine the price for a service;
II. The remuneration or estimation, in any way, of personal tasks;
III. Activities that may affect life, health or body integrity;
IV. Legal, judicial or administrative events; or
V. The verification or calibration of other measuring instruments.
ARTICLE 11.- The Secretariat may require from manufacturers, importers, marketers or users of measuring instruments theirverification or calibration when metrological inefficiencies are detected in such instruments, either before they are sold or during
their use.
For such purpose, the Secretariat will publish in the Official Journal of the Federation, with due time in advance, the list ofmeasuring instruments and standards the initial, periodical or extraordinary verification or calibration of which will be mandatory,
notwithstanding the possibility to extend it or modify it at any time.
ARTICLE 12. The Secretariat, as well as the people accredited by it, when verifying measuring instruments, will leave thedocuments that prove such action has been officially carried out in the hands of the concerned people. This verification will
include the confirmation of the accuracy of such instrument within tolerances and all other requirements set forth in the Official
Mexican Standards and, if applicable, their adjustment when they have appropriate devices to do so.
Reformed article DOF 05-20-1997
ARTICLE 13.- Containers that, not being measuring instruments, are repeatedly dedicated to contain or transport materials
that are subject to transactions and the mass of which is determined by simultaneously measuring the container and the material,
shall bear on a visible place and indelibly with legible characters their tare and gross weight, which may be verified in the way
and places arranged by the Secretariat; besides, when their repeated and systematic filling allows and requires so, upon the priorissuance of the relevant Official Mexican Standard, each time the container is filled, it must have a tamper seal ensuring thequantity, qualification and quality of the material.
Reformed article DOF 05-19-1999, 04-30-2009
ARTICLE 14.- When measuring instruments do not meet regulatory requirements, they will be immobilized prior to sale oruse until they meet them. Those that cannot be conditioned to meet the requirements of this Law or its regulations will be madeunusable.
CHAPTER III
Compulsory Measurement of Transactions
ARTICLE 15.- In all trading, industrial or service transactions performed based on a quantity, this shall be measured using
appropriate measuring instruments, except in those cases indicated by the regulations, addressing the nature or properties of thetransaction item.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

The Secretariat will determine the appropriate measuring instruments based on the materials under transaction and the optimal
efficiency of the measurement.
ARTICLE 16.- Owners of measuring instruments have the obligation to allow any party affected by the result of themeasurement to verify that the used procedures are appropriate.
ARTICLE 17. Automatic measuring instruments that are used in the services for the supply of water, gas, electrical power orothers determined by the Secretariat become subject to the following instructions:
Reformed paragraph DOF 05-20-1997
I. The authorities, companies or people who directly provide the service will be obliged to have a sufficient number ofstandard instruments, as well as the necessary laboratory equipment to verify, on their own, the degree of accuracy of the
instruments in use;
The Secretariat may exempt suppliers for having laboratory equipment when several companies provide the same service andbear the cost of such equipment for use by the Secretariat, in which case the adjustment of the instruments will be under the
responsibility of the Secretariat;
II. Suppliers may freely move all the parts of the measuring instruments they use in order to repair or adjust them, provided
that they have measurement standards and laboratory equipment. In such cases, they have to place on those instruments thenecessary seals to prevent outside people from modifying their adjustment conditions;III. The authorities, companies or people who provide the services will undertake the responsibility for the adjustment
conditions of the instruments they use, provided that the respective instrument has the seals imposed by the supplier;IV. The Secretariat may carry out the verification of the instruments referred to in this article. In the case of services provided
by state-owned agencies or entities that have the equipment referred to in section I, the verification shall be performed bysampling; andV. With the exception provided for in section II, in no other case may the seals imposed by the supplier or by the Secretariat
be destroyed. Those who do so will receive the respective sanction and will have to make the estimated payment of the applicableconsumption.
ARTICLE 18.- The Secretariat will demand that measuring instruments that are the basis for transactions meet therequirements indicated by this Law, its regulations or the Official Mexican Standards in order for people to assess themeasurement operation.
ARTICLE 19.- The owners of scales with maximum measurement scope equivalent to or greater than five tons shall keep inthe place where the scale is used tares or have access to them, the minimum equivalent of which is 5% of its maximum scope.
The Secretariat may demand that the operation of such scale is performed by people who meet the required qualification
requirements.
ARTICLE 20.- It is prohibited to use measuring instruments that do not comply with the specifications arranged in the
Official Mexican Standards.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

Inappropriate use of measuring instruments for the damage of any person will be sanctioned in accordance with the respective
legislation.
ARTICLE 21.- Products that are packaged or bottled by manufacturers, importers or trade people shall have on the
packaging, container, wrap or label, after the phrase net content, the indication of the quantity of material or merchandise they
contain. Such quantity shall be expressed in accordance with the General System of Measurement Units, with legible charactersand on places where it can be easily seen.
When the transaction is performed based on the quantity of parts, accessories or effects units, the indication shall refer to thenumber contained in the package or container and, if appropriate, its size.
In packaged or bottled food products, the net content shall correspond to the total. When they are comprised of liquid andsolid parts, additionally to the net content, the quantity of drained mass shall be indicated.
ARTICLE 22.- The Secretariat will fix the allowable tolerances regarding the net content of packaged or bottled products,
addressing in the same way the alterations they may undergo due to their nature or phenomena that modify the quantity inquestion. Such tolerances will be fixed for net content verification purposes.
ARTICLE 23.- If, upon verification of the quantity indicated as net content of packaged or bottled products, it is found thatthey are outside the fixed tolerance, the Secretariat may, additionally to impose the applicable administrative sanction, prohibit its
sale until the net content is remarked with legible characters or it is completed.
The selection of samples for the verification of the net content will be carried out randomly and through the statisticalsampling system, in which case, the verification result will be observed to, if applicable, prohibit the sale while the net content is
not remarked or completed.
CHAPTER IV
On the National Calibration System
ARTICLE 24.- The National Calibration System is established in order to procure the consistency and reliability of themeasurements carried out in the country, for commercial and service transactions, as well as in industrial processes and theirrespective scientific and technological development research works.
The Secretariat will authorize and control the national standards of basic units and those derived from the General System of
Measurement Units and will coordinate the actions tending to determine the accuracy of the standards and measuring instrumentsthat are used by accredited laboratories, in comparison to that of the respective national standards, in order to obtain theconsistency and reliability of measurements.
ARTICLE 25. The National Calibration System will be composed by the Secretariat, the National Metrology Center, thecorresponding accreditation entities, the accredited calibration laboratories and any other experts on the subject deemed
convenient by the Secretariat. In support for such System, the Secretariat will undertake the following actions:
Reformed paragraph DOF 05-20-1997
I. Participate in the evaluation committees for the accreditation of laboratories to provide measurement and calibration
services;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATION
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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Reformed section DOF 20-05-1997
II. Integrate calibration chains with accredited laboratories, according to the assigned accuracy levels;
III. Disseminate the measurement capability of accredited laboratories and the integration of calibration chains;
IV. Authorize measurement and calibration methods and procedures and deploy a data bank in order to disseminate themamong official, scientific, technical and industrial media;
V. Hold agreements with foreign and international official institutions for the mutual acknowledgment of calibrationlaboratories;
VI. Enter into metrological collaboration and research agreements with state governments, as well as with national andinternational institutions, bodies and companies;
VII. Establish regular evaluation mechanisms for calibration laboratories that are part of the system; andVIII. All others that are required to procure the consistency and reliability of measurements.
ARTICLE 26. For the accreditation of calibration laboratories, the provisions of Article 68 shall be observed.
When measurement and calibration technical services are required for the evaluation of conformity regarding Official
Mexican Standards, accredited laboratories shall be approved by the Secretariat in accordance with Article 70 and havemeasurement standards with traceability to national standards.
The accreditation and approval of laboratories will be granted per calibration or measurement specific activity.
Reformed article DOF 05-20-1997
ARTICLE 27.- Accredited laboratories may provide calibration and measurement operation services. The result of thecalibration of measurement standards and measuring instruments will be stated in the laboratory assessment, signed by the person
in charge, in which the corresponding accuracy degree will be indicated, in addition to data that allow the identification of themeasurement standard or measuring instrument.
Measurement operations will be stated in assessments that shall be issued, under their responsibility, by the individual
authorized by each laboratory for such purpose.
ARTICLE 28. (Abrogated)
Abrogated article DOF 05-20-1997
CHAPTER V
On the National Metrology Center
ARTICLE 29.- The National Metrology Center is a decentralized body with legal personality and patrimony of its own, thepurpose of which is to carry out high technical level actions on metrology matters.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

ARTICLE 30.- The National Metrology Center will have the following functions:
I. Serve as the primary laboratory of the National Calibration System;
II. Preserve the corresponding national standard for each magnitude, unless its preservation in other institution is moreconvenient;
III. Provide calibration services for the measurement patterns in laboratories, research centers or the industry, when requested,
and issue the corresponding certificates;
IV. Promote and carry out technological research and development activities in the different fields of metrology, andcontribute to the development of human resources for such purposes;
V. Advise the industrial, technical and scientific sectors in relation to measurement problems and certify reference standard
materials;
VI. Participate in the exchange of metrological development with national and international bodies and in the intercomparisonof measurement standards;
VII. To carry out mediation expert reporting and assessments on the technical capability of laboratories for calibration ormeasurement, upon request by specific parties of by the Secretariat within the evaluation committees for accreditation;
Reformed section DOF 05-20-1997
VIII. Organize, and participate, if appropriate, in congresses, seminaries, lectures, courses or any other type of metrology
related events;
IX. Enter into agreements with research institutions with capability to develop primary standards or high accuracy instruments,
as well as with educational institutions that may offer specialties on metrology;
X. Enter into metrogical collaboration and research agreements with national and international institutions, bodies andcompanies; andXI. Any others that are required for its operation.
ARTICLE 31.- The National Metrology Center will be comprised by a Board of Directors, a Director-General, and therequired salaried high degree and operational personnel.
Besides, the relevant surveillance bodies will be established in accordance with the Federal Law on State-Owned Entities.
ARTICLE 32.- The Board of Directors of the National Metrology Center will be comprised by the Secretary of Economy,
who will preside over it; the undersecretaries whose attributions are related to the subject matter, from the Secretariat of Financeand Public Credit, Energy; Public Education, Communications and Transportation; a representative of the National Autonomous
University of Mexico, a representative of the National Polytechnic Institute; the Director-General of the National Council of
Science and Technology; representatives of the National Confederation of Industrial Chambers; of the National Chamber ofTransformation Industry and of the National Confederation of Commerce Chambers and the Director-General for Standards of theSecretariat. For each regular member, a substitute will be designated.
Reformed paragraph DOF 07-28-2006

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

Upon proposal by any member of the Board of Directors, representatives of high-level teaching and research institutions andof other industrial organizations may be invited to participate in sessions.
ARTICLE 33.- The Board of Directors will have the following attributions:
I. Issue their organic statute;
II. Evaluate and, if appropriate, approve the annual operational schedule;
III. Analyze and approve, if appropriate, the periodic reports submitted by the Director-General, with the corresponding
intervention of commissioners;
IV. Approve the income and expenditure budgets;
V. To monitor the use of the budgets referred to in the foregoing section;
VI. Examine and, if appropriate, approve the annual balance and the financial reports of the body, being duly audited;VII. Authorize the creation of technical and support committees;
VIII. Issue the regulations referred to in Article 36;
IX. Approve the execution of other activities for the achievements intended to the achievement of the purposes of the
National Metrology Center; andX. Any others indicated in the applicable laws, regulations and legal provisions.
ARTICLE 34.- The Director-General of the National Metrology Center will be appointed by the President of the Republic.
Public servants belonging to the immediate lower hierarchies to that of the Director-General will be appointed by the Board of
Directors upon a proposal by the Director-General.
ARTICLE 35.- The Director-General of the National Metrology Center will have the following powers and obligations:
I. Represent the body before all kinds of authorities, with all the general powers referred to in Article 2554 of the Civil Codefor the Federal District on Local Matters, and for all the Republic on Federal Matters, and the special powers required to exercise
his position;
II. Prepare the annual operational schedule and submit it to consideration by the Board of Directors, and ensure compliancewith the approved one;
III. Establish and keep relationships with international and foreign metrology bodies;
IV. Constitute and coordinate working groups specialized on metrology;
V. Designate the salaried high-degree personnel, except for the one that corresponds to the two immediate hierarchies below
his position, based on the provisions of the following article, and also designate all other personnel;
VI. Formulate the draft for the annual budget of the body, submit it for consideration by the Board of Directors and monitor
the use of the approved budget;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015VII. Submit the periodic reports to the Board of Directors in relation to the activities that have been carried out, the budgetthat has been used and those related to all other issues that must be known by the Board of Directors; andVIII. Execute the agreements of the Board of Directors and, in general, carry out the activities for duly compliance with thefunctions of the National Metrology Center and the programs approved for such purpose.
ARTICLE 36.- The appointment of the Director-General and the technical salaried high-degree personnel shall be under the
responsibility of professionals from the science or engineering area with recognized experience on metrology matters. The
respective appointments will be made based on the results of the evaluation of such professionals. Promotions will be made basedon the evaluation of performance, in accordance with the regulations approved by the Board of Directors for such purpose.
The personnel of the National Metrology Center will be incorporated into the regime of Security and Social Services for State
Workers and their relationships with the Center will be ruled by the Federal Law on State Workers, Regulatory of Paragraph B) of
Constitutional Article 123.
ARTICLE 37.- The patrimony of the National Metrology Center will be integrated by:
I. The assets provided by the Federal Government;
II. The resources annually assigned by the Federal Government within the budget approved for the Secretariat of Economy;
Reformed section DOF 07-28-2006
III. The income earned by its provided services and that resulting from the use of its assets; andIV. All other assets and rights acquired for the fulfillment of its purposes.
TITLE THREE
STANDARDIZATIONCHAPTER I
General Provisions
ARTICLE 38.- According to their competencies, agencies shall:
I. Contribute to the integration of the National Standardization Program with the proposals of Official Mexican Standards;
II. Issue Official Mexican Standards on matters related to their attributions and determine their effective date;
Reformed section DOF 05-20-1997
III. Execute the National Standardization Program in their respective competency areas;
IV. Constitute and preside over national consultative committees on standardization;
Reformed section DOF 05-20-1997

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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

V. Certify, verify and inspect that products, processes, methods, facilities, services or activities comply with Official Mexican
Standards;
VI. Participate in accreditation evaluation committees and approve certifying bodies, testing laboratories and verification
units based on the results of such committees, when this is required for conformity evaluation regarding Official Mexican
Standards;
Reformed section DOF 05-20-1997
VII. Coordinate, when applicable, with other agencies in order to comply with the provisions of this Law and communicate to
the Secretariat their opinion on the drafts for technical regulations of other countries, under the terms of the international
agreements and treaties which the United Mexican States is part of;
Reformed section DOF 05-20-1997
VIII. Coordinate with higher education institutions or with associations or colleges of professionals to constitute study andtraining programs in order to train qualified technicians and promote the activities referred to in this Law; andReformed section DOF 05-20-1997
IX. All other attributions conferred by this Law and its regulations.
Added section DOF 05-20-1997
ARTICLE 39. It is the responsibility of the Secretariat, in addition to the provisions set forth in the foregoing article, to:Reformed paragraph DOF 05-20-1997
I. Integrate the National Standardization Program with the Official Mexican Standards and Mexican Standards intended to beannually prepared;
II. Code the Official Mexican Standards by subject matters and keep the inventory and collection of Official Mexican
Standards and Mexican Standards, as well as of international and foreign standards;
III. Serve as Technical Secretary of the National Standardization Commission and of the National Standardization
Committees, unless the committees decide to appoint their technical secretary;
IV. Keep a registry of national standards bodies, of accreditation entities, as well as of accredited and approved people;
Reformed section DOF 05-20-1997
V. Issue the Official Mexican Standards referred to in sections I to IV, VIII, IX, XII, XV and XVIII of Article 40 of this Law,in the areas of their competency;
Reformed section DOF 12-24-1996, 05-20-1997
VI. Carry out actions and programs to foster quality of Mexican products and services;VII. Coordinate with all other agencies and with the Federal Telecommunications Institute for compliance with the provisionsof this Law, based on the attributions of each agency and said Institute;
Reformed section DOF 07-14-2014

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FEDERAL LAW ON METROLOGY AND STANDARDIZATION
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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

VIII. Participate with the entitlement of voice and vote in the national standardization consultative committees in which
industrial or trading activities are impacted;
Reformed section DOF 05-20-1997
IX. Authorize accreditation entities, receive complaints filed against such entities and, if appropriate, require the review ofgranted accreditations, and approve, upon prior opinion of the National Standardization Commission, the guidelines for theorganization of evaluation committees;
Reformed section DOF 05-20-1997
X. Coordinate and manage committees and international activities regarding standardization, as well as any other similar
subjects referred to in this Law;
Added section DOF 05-20-1997
XI. Serve as an information center on standardization matters and notify the Official Mexican Standards in accordance withthe provisions of the international agreements and treaties which the United Mexican States is part of, for which agencies shallprovide the necessary information on a timely basis; andAdded section DOF 05-20-1997
XII. All other powers conferred by this Law and its regulations.
Added section DOF 05-20-1997
CHAPTER II
On Official Mexican Standards and Mexican Standards
Reformed name of Chapter DOF 05-20-1997
SECTION I
On Official Mexican Standards
Added section DOF 05-20-1997
ARTICLE 40.- Official Mexican Standards will have the purpose to set forth:
I. The characteristics and/or specifications to be met by products and processes when they may constitute a risk for the safetyof people or damage human, animal or plant health, the general and work environment, or for the preservation of natural
resources;
II. The characteristics and/or specifications of the products used as raw materials, pieces or materials for the manufacturing or
assembling of final products subject to compliance with Official Mexican Standards, provided that, in order to comply with their
specifications, those for such raw materials, pieces or materials are essential;
III. The characteristics and/or specifications to be met by services when they may constitute a risk for the safety of people ordamage human, animal or plant health, or the general and work environment, or in the case of generalized service provision for
consumers;
IV. The characteristics and/or specifications related to measuring instruments, measurement standards and their measurement,
verification, calibration and traceability methods;
V. The specifications and/or procedures for the bottling and packaging of products that may constitute a risk for the safety ofpeople or damage their health or the environment;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
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VI. (Abrogated)
Abrogated section DOF 05-20-1997
VII. Health, safety and hygiene conditions that shall be observed in work centers and other public meeting centers are;
VIII. The nomenclature, expressions, abbreviations, symbols, diagrams or drawings that shall be used in the technicalindustrial, commercial, services or communication language;
IX. The description of emblems, symbols and passwords for the purposes of this Law;
X. The characteristics and/or specifications, criteria and procedures that allow protecting and promoting the improvement of
the environment and ecosystems, as well as the preservation of natural resources;
XI. The characteristics and/or specifications, criteria and procedures that allow protecting and promoting the health of people,
animals or plants;
XII. The determination of trading, sanitary, ecologic, quality, safety and hygiene information, and the requirements to be met
by labels, containers, packaging and advertisement of products and services to provide the consumer or user with information;
XIII. The characteristics and/or specifications to be met by equipment, materials, devices and industrial, commercial, services
and domestic facilities for sanitary, aquaculture, agriculture, livestock, ecologic, communications, safety or quality purposes,
particularly when these are hazardous;
XIV. (Abrogated)
Abrogated section DOF 05-20-1997
XV. Support to the designation of origin for products of the country;
XVI. The characteristics and/or specifications to be met by communication devices, networks and systems, as well astransportation vehicles, equipment and related services to protect the general means of communication and the safety of users;
XVII. The characteristics and/or specifications, criteria and procedures for the handling, transportation and confinement of
hazardous industrial materials and waste and radioactive substances; andXVIII. Others in which it is required to standardize products, methods, processes, systems or industrial, trading or service
practices in accordance with other legal provisions, provided that the provisions of Articles 45 to 47 are observed.
The criteria, rules, instructions, manuals, notices, guidelines, procedures or other mandatory provisions that agencies require
to establish and which refer to the subject matters and purposes established in this article may only be issued as Official Mexican
Standards in accordance with the procedure set forth in this Law.
Added paragraph DOF 05-20-1997
ARTICLE 41.- Official Mexican Standards shall contain:
I. The name of the standards and its key or code, as well as its purposes in accordance with Article 40;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
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Latest Reform DOF 12-18-2015

Reformed section DOF 20-05-1997
II. The identification of the product, service, method, process, facility or, if appropriate, the purpose of the Standard inaccordance with the provisions of the foregoing article;
III. The specifications and characteristics relevant to the product, service, method, process, facility or establishments that are
set forth in the Standards by virtue of their purpose;
IV. The applicable testing methods relating to the Standard and, if applicable, the sampling methods;
V. The data and any other information that products or otherwise their containers or packaging must contain, as well as thesize and characteristics of the various indications;
VI. The degree of agreement with international Standards and guidelines and with Mexican Standards taken as a basis for
preparation;
Reformed section DOF 05-20-1997
VII. The bibliography relevant for the Standard;
VIII. The mention of the agency or agencies that will monitor compliance with the Standards when there is concurrency ofcompetencies; andIX. Other mentions that are deemed convenient for duly understanding and scope of the Standard.
ARTICLE 42. (Abrogated)
Abrogated article DOF 05-20-1997
ARTICLE 43.- In the preparation of Official Mexican Standards there will be participation, by exercising their respective
attributions, of agencies with the responsibility of regulating or controlling the product, service, method, process or facility,
activity or subject matter to be standardized.
ARTICLE 44.- Agencies are responsible for preparing the drafts of Official Mexican Standards and for submitting them tonational standardization consultative committees.
Likewise, national standards bodies may submit to said committees, as drafts, the Mexican standards issued by them.
National standardization consultative committees, based on the aforementioned drafts, will prepare in turn the drafts ofOfficial Mexican Standards, in accordance with the provisions of this chapter.
For the preparation of Official Mexican Standards, it will be necessary to verify if there are any other related Standards, inwhich case the relevant agencies will coordinate with each other to prepare in a jointly manner one single Official Mexican
Standard by sector or subject matter. Besides, Mexican and International Standards will be considered, and when the latter are notan effective or appropriate means to comply with the purposes set forth in Article 40, the agency shall communicate this to theSecretariat before the draft is published in terms of Article 47, section I.
Reformed paragraph DOF 05-20-1997
Interested people may submit to agencies proposals of Official Mexican Standards, and the latter will make the corresponding
evaluation and, if appropriate, will submit the draft in question to the respective committee.

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General Secretariat
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ARTICLE 45. Drafts submitted to committees for discussion will include a regulatory impact statement, in the way
determined by the Secretariat, which shall contain a succinct explanation of the purpose of the Standard, of the proposed measures,of the considered alternatives and of the reason why they were discarded, a comparison of such measures against the regulatory
background, as well as an overview of the advantages and disadvantages and the technical feasibility of the verification ofcompliance with the Standard. For the purposes of the provisions of Article 4A of the Federal Law on Administrative Procedure,
the statement must be submitted to the Secretariat on the same date it is submitted to the committee.
When the Standard may have a broad impact on the economy or a substantial effect on a specific sector, the statement shall
include an analysis in monetary terms of the current value of costs and potential benefits of the drafts and the consideredalternatives, as well as a comparison against International Standards. If such analysis is not included in accordance with thisparagraph, the committee or the Secretariat may require it within 15 calendar days following the submission of the statement tothe committee, in which case the period indicated in Article 46, section I will be interrupted.
When the mentioned analysis is not satisfactory according to the committee or the Secretariat, they may request the agency toappoint an expert, who shall be approved by the president of the National Standardization Commission and the Secretariat. If noagreement can be reached, the latter will appoint their respective experts to work together with the expert appointed by the agency.
In both cases, the hiring cost will be charged to the budget of the agency or the interested individuals. Such request may be madesince the analysis is submitted to the committee and up to 15 calendar days after the publication indicated in Article 47, section I.
Within 60 calendar days following the hiring of the expert or experts, the review of the analysis shall be carried out and comments
shall be delivered to the committee, from which the period referred to in Article 47, section II will be counted.
Reformed article DOF 05-20-1997
ARTICLE 46.- The preparation and modification of Official Mexican Standards will be subject to the following rules:
I. Drafts referred to in Article 44 will be directly submitted to the respective national standardization consultative committee,
so that within a term not exceeding 75 calendar days, it provides remarks; andII. The agency or body that prepared the draft Standard will provide well-grounded response to the remarks submitted by theCommittee within a period not exceeding 30 calendar days counting from the date on which they were submitted and, if
appropriate, will make the relevant modifications. When the agency that submitted the draft considers the remarks submitted by
the Committee are not grounded, it may request to the presidency of the latter, without modifying the draft, to command its
publication as a draft in the Official Journal of the Federation.
ARTICLE 47.- Draft Official Mexican Standards will adjust to the following procedure:
I. They will be fully published in the Official Journal of the Federation so that within the following 60 calendar days
interested parties submit their commentaries to the relevant national standardization consultative committee. During this term, thestatement referred to in Article 45 will be available for the public for consultation at the committee;
Reformed section DOF 05-20-1997

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

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II. At the end of the term referred to in the foregoing section, the national standardization consultative committee will
examine the received comments and, if appropriate, will modify the draft within a period not exceeding 45 calendar days;
III. The publication of the response to the received comments and the modifications to the draft in the Official Journal of theFederation will be commanded, at least 15 calendar days before publishing the Official Mexican Standard; andReformed section DOF 05-20-1997
IV. Once they have been approved by the respective standardization committee, the Official Mexican Standards will be issued
by the competent agency and published in the Official Journal of the Federation.
When two or more agencies are competent to regulate a good, service, process, activity or matter, they shall issue the Official
Mexican Standards on a jointly basis. In all cases, the president of the committee will be in charge of commanding their
publishing in the Official Journal of the Federation.
The provisions of this article will not apply to the case of the following article.
ARTICLE 48.- In emergency cases, the competent agency may directly prepare, without involving any draft and, if
appropriate, with the participation of all other competent agencies, the Official Mexican Standard, the publishing of which in the
Official Journal of the Federation will be commanded with a maximum valid term of six months. In no case may the sameStandard be issued more than two consecutive times under the terms of this article.
Prior to the second issuance, a regulatory impact statement shall be submitted to the Secretariat, and if the agency that
prepared the Standard decided to extend the validity period or make it permanent, it will be submitted as a draft in terms ofsections I and II of Article 46.
Reformed paragraph DOF 05-20-1997
Only unexpected events that impact or threaten in an imminent manner the purposes established in Article 40 will be deemed
emergency cases.
Added paragraph DOF 05-20-1997
The Official Mexican Standard must comply with the provisions of Article 41, set the scientific or technical basis supporting
its issuance in accordance with the purposes set forth in Article 40 and be intended to avoid unrepairable or irreversible damages.
Added paragraph DOF 05-20-1997
ARTICLE 49. When an Official Mexican Standard requires the use of specific materials, equipment, processes, testing
methods, mechanisms, procedures or technologies, recipients of the Standards may request the authorization of the issuing agency
to use or apply alternative materials, equipment, processes, testing methods, mechanisms, procedures or technologies. The request
must include the necessary scientific or objective evidence proving that with the posed alternative the purposes of the respective
Standard are met.
The agency will forward a copy of the request to the relevant national standardization consultative committee within 5calendar days following its receipt, for the latter to issue an opinion. In any case, the agency shall reach a decision within 60
calendar days following the receipt of the request. This term will be extendable only one time for an equal period and will besuspended in case the agency requires from the interested party more justification elements, being resumed on the business day
following the date on which the requirement is fulfilled. The authorization will be granted with preservation of the rights

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protected in the laws on intellectual property, and will be considered positive if it is not issued within the relevant term.
The authorization will be published in the Official Journal of the Federation and will be applicable for the benefit of anyone
who requests it, provided that it is demonstrated to the agency that it is within the same assumptions of the granted authorization.
The agency will reach a decision on this request within the 15 following calendar days; otherwise it will be deemed that theresolution is positive.
Abrogated article DOF 12-24-1996. Added DOF 05-20-1997
ARTICLE 50.- Agencies may require from manufacturers, importers, service providers, consumes or research sites thenecessary data for the preparation of draft Official Mexican Standards. They may also collect, from them and for the same
purposes, the strictly necessary samples, which will be returned once their testing has been conducted, unless their destruction has
been necessary for this.
The information and documentation sent to agencies for the preparation of draft Official Mexican Standards, and for any
administrative processes related to them, will be exclusively used for such purposes and when its confidentiality is protected byLaw, the interested party shall authorize its use. Upon express request by the interested party, it will be of confidential nature andwill not be revealed, having the protection set forth on intellectual property matters.
Reformed paragraph DOF 05-20-1997
ARTICLE 51.- For modifying the Official Mexican Standards, the procedure for their preparation shall be met.
When the reasons that caused the issuance of an Official Mexican Standard do not subside, at its own Initiative or uponrequest by the National Standardization Commission, the Secretariat or the members of the relevant national standardization
consultative committee may modify or cancel the Standard in question without following the procedure for its preparation.
Added paragraph DOF 12-24-1996
The provisions of the foregoing paragraph are not applicable when it is intended to create new requirements or procedures, orto incorporate more strict specifications, in which case the procedure for the preparation of Official Mexican Standards shall befollowed.
Added paragraph DOF 12-24-1996
Official Mexican Standards shall be reviewed every 5 years from their effective date, with the obligation to notify thetechnical secretary's office of the National Standardization Commission about the results of the review, within 60 calendar days
following the end of the corresponding five-year period. If such notification is not provided, Standards will lose their validity andthe agencies that have issued them shall publish their cancellation in the Official Journal of the Federation. The Commission
may request such cancellation to the agency.
Added paragraph DOF 05-20-1997
Notwithstanding the foregoing, within the year following the effective date of the Standard, the national standardization
consultative committee or the Secretariat may request the agencies to analyze its application, effects and observance in order todetermine the actions that improve its application and if its modification or cancellation is appropriate.
Added paragraph DOF 05-20-1997
SECTION II
On Official Mexican Standards
Added section DOF 05-20-1997

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General Secretariat
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Latest Reform DOF 12-18-2015

ARTICLE 51-A. Mexican Standards are of voluntary application, except in those cases in which private individuals state that
their products, processes or services are compliant with them and not withstanding that agencies require their observance in an
Official Mexican Standard for given purposes. Their scope may be national, regional or local.
For the preparation of Mexican Standards, the following must be observed:
I. They must be included in the National Standardization Program;
II. Take as a basis the International Standards, unless these are ineffective or inappropriate to reach the desired purposes andthis is duly justified; andIII. Be based on the consensus of the interested sectors participating in the committee and be subject to public consultation fora period of no less than 60 calendar days before being issued, by means of an announcement published in the Official Journal of
the Federation which contains an abstract.
In order for the Standards prepared by the national standards bodies and, exceptionally, those prepared by other bodies,chambers, professionals' colleges, associations, companies, agencies or entities of the federal public administration to be issued as
Mexican Standards, they must comply with the requirements set forth in this Section, in which case the technical secretary's officeof the National Standardization Commission will publish in the Official Journal of the Federation their declaration of validity,
for informative purposes.
The review, update or cancellation of Official Mexican Standards shall comply with the same procedure for their preparation,but, in any case, they shall be reviewed or updated within 5 years following the publishing of the declaration of validity, and theresults of the review or update shall be notified to the technical secretary's office. Failure to make the notification will cause thetechnical secretary's office of the National Standardization Commission to order their cancellation.
Added article DOF 05-20-1997
ARTICLE 51-B. The Secretariat, by itself or upon request by agencies, may issue Mexican Standards on the areas uncoveredby the national standards bodies or when it is demonstrated to the National Standardization Commission that the Standards issued
by such bodies do not reflect the interests of the involved sectors. For this, the issues proposed as Mexican Standards shall be
included in the National Standardization Program, justify their convenience and, if appropriate, the agency requesting it shall also
demonstrate that it has the capability to coordinate the corresponding standardization committees. In any case, such Standards
shall comply with the provisions of this Section.
Added article DOF 05-20-1997
CHAPTER III
On Compliance with the Standards
ARTICLE 52.- All products, processes, methods, facilities, services or activities shall comply with Official Mexican
Standards.
ARTICLE 53.- When a product or service must comply with a given Official Mexican Standard, similar products or services
to be imported shall also comply with the specifications set forth in such Standard.
For such purposes, the products or services to be imported shall comply with the certificate or authorization by the competentagency to regulate the relevant product or service or the people who are accredited and approved by the competent agencies for

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
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Latest Reform DOF 12-18-2015

such purpose in accordance with the provisions of this Law.
Reformed paragraph DOF 05-20-1997
When there are no Official Mexican Standards, the competent agencies may require that the products or services to beimported hold the international specifications they comply with, those of the country or origin or, in lack of them, those of the
manufacturer.
Reformed paragraph DOF 05-20-1997
ARTICLE 54.- Mexican Standards will constitute a reference to determine the quality of the products and services inquestion, particularly for the protection and guidance of consumers. In no case may such Standards contain specifications that are
inferior to those set forth in Official Mexican Standards.
ARTICLE 55.- In civil, commercial or administrative controversies, when the characteristics of the goods or services are notspecified, the competent judicial or administrative authorities shall take as a reference for their resolutions the Official Mexican
Standards or, otherwise, the Mexican Standards.
Notwithstanding the provisions of the law on such matters, the goods or services that are acquired, leased or contracted byagencies and entities of the federal public administration must comply with Official Mexican Standards and, if appropriate, with
Mexican Standards, or in lack of them, with International Standards.
Reformed paragraph DOF 05-20-1997
For the evaluation of conformity with such Standards, the provisions of Title Four shall be observed.
Added paragraph DOF 05-20-1997
When agencies and entities establish requirements for suppliers in order for the latter to prove their reliability or their quality
assurance procedures in the production of goods or services, such requirements shall be based on the Standards issued inaccordance with this Law, and be published in advance, so suppliers are able to know and comply with them.
Added paragraph DOF 05-20-1997
ARTICLE 56.- Producers, manufacturers and service providers subject to Official Mexican Standards shall keep quality
control systems that are compatible with the applicable Standards. They will also be obliged to systematically verify the
specifications of the product or service and its process, using sufficient and adequate laboratory equipment and the appropriate
testing method, and to keep statistical control of the production in such way that compliance with such specifications isobjectively valued.
ARTICLE 57.- When the products or services subject to compliance with a given Official Mexican Standard do not meet therelevant specifications, the competent authority will immediately prohibit their marketing, immobilizing the products until they
are conditioned, reprocessed, repaired or substituted. If this is not possible, the necessary measures will be taken so they are notused or provided for the purpose they would fulfill if such specifications had been met.
If the product or service is in the trading sector, traders or providers will have the obligation to abstain from their transfer orprovision from the date on which they are notified about the resolution or it is published in the Official Journal of theFederation. When non-compliance with the Standard may significantly damage the health of people, animals, plants,
environment or ecosystems, traders will abstain from transferring the products or providing the services from the moment they are
informed of this. Mass media shall immediately disseminate these facts upon request by the competent agency.

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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Producers, manufacturers, importers and their vendors will be responsible for immediately retrieving the products.
Those who are liable for non-compliance with the Standard will be obliged to replace for traders the products or services thesale or provision of which is prohibited, for others that comply with the relevant specifications or, if appropriate, they shall refundor reimburse their value, and shall cover the expenses incurred into for their treatment, recycling or final disposal, in accordancewith the legal set of laws and the recommendations by recognized experts on the matter in question.
Delay in compliance with the provisions of the foregoing paragraph may be sanctioned with fines for each elapsed day, in
accordance with those set forth in section I of Article 112 of this Law.
CHAPTER IV
On the National Standardization Commission
ARTICLE 58.- The National Standardization Commission is established in order to contribute to the standardization policy
and to allow the coordination of activities on this matter under the responsibility of the different agencies and entities of thefederal public administration.
ARTICLE 59.- The National Standardization Commission will be comprised by:I.

The undersecretaries of the Secretariats of Social Development, Environment and Natural Resources, Energy,
Economy, Agriculture, Livestock, Rural Development, Fisheries and Food; Communications andTransportation, Health, Labor and Social Welfare; and Tourism;
Reformed section DOF 05-20-1997, 07-28-2006

II.

Representatives of the National Association of Universities and Institutes of Higher Education; of theindustrial and trade chambers and associations of the countries determined by agencies, national standards
bodies and bodies of the productive social sector; andIII.

The holders of the corresponding undersecretariats of the Secretariat of Finance and Public Credit, of Public
Administration; and of Public Education, as well as of the National Council of Science and Technology; of the
National Metrology Center; of the National Institute of Ecology, of the Consumer Protection Federal Agency;of the Mexican Institute of Transportation; of the National Fisheries Institute and of the research institutes orentities related to this matter that are deemed appropriate.
Reformed section DOF 05-20-1997, 04-09-2012

For each holder member, a substitute may be appointed in order to cover exclusively the temporary absence of the former.
Likewise, representatives of other agencies, federal entities, public and private bodies, workers, consumers and professionals’
organizations and of scientific and technological institutions may be invited to participate in the Commission's sessions when
topics of their competence, specialty or interest are addressed.
The Commission will be presided in rotation for one year by undersecretaries in the order set forth in section I of this Article.
Reformed paragraph DOF 05-20-1997

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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

For performing its functions, the Commission will have a technical secretary office under the responsibility of the Secretariat
and a technical board.
Reformed paragraph DOF 05-20-1997
ARTICLE 60.- The Commission will have the following functions:I. Annually approve the National Standardization Program and monitor compliance with it;
II. Establish rules for coordination among agencies and entities of the federal public administration and private organizations
for the preparation and dissemination of Standards and compliance with them;III. Recommend to the agencies the preparation, modification, cancellation of Official Mexican Standards or their joint
issuance;
Reformed section DOF 05-20-1997
IV. Resolve any discrepancies that may appear in the works of national standardization consultative committees;
V. Give an opinion, when required, on the registration of national standards bodies;
Reformed section DOF 05-20-1997
VI. Propose the integration of working groups for the examination and research of specific matters;
VII. Propose any measures that are deemed appropriate to foster standardization, as well as those necessary to resolve
complaints issued by interested parties on aspects related to the enforcement of this Law;
Reformed section DOF 05-20-1997
VIII. Dictate guidelines for the organization of national standardization consultative committees and give an opinion on those
applicable to evaluation committees; andReformed section DOF 05-20-1997
IX. All those necessary for performing the aforementioned functions.
The internal regulations of the Commission will determine the way according to which these functions will be performed.
ARTICLE 61.- The sessions of the National Standardization Commission will be convened by the technical secretary uponrequest by the president or any of the members referred to in Article 59, and will be held at least once every 3 months.
In the case of sections I, II, IV and VIII of the foregoing article, decisions will be made by majority of votes of the members
referred to in section I of Article 59 and sessions will be valid with the presence of at least seven of them. An any other cases, bymajority of all members, but at least four of the representatives mentioned in section II of the same article shall be present.
ARTICLE 61-A. The National Standardization Program is integrated by the listing of topics to be standardized during thecorresponding year for Official Mexican Standards, Mexican Standards or the Standards referred to in Article 67, will include thework schedule for each topic and will be published in the Official Journal of the Federation. When the National Standardization
Commission considers such Program requires a supplement, the same procedure as the one for its integration and publication shallbe followed.

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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

The National Standardization Commission will establish the bases for the integration of the Program.
Competent agencies may not issue Official Mexican Standards on topics that are not included in the program of the relevant
year or its supplement, except for the cases provided for in Article 48.
Added article DOF 05-20-1997
CHAPTER V
On National Standardization Consultative Committees
ARTICLE 62.- National standardization consultative committees are bodies for the preparation of Official Mexican
Standards and promotions of compliance with them. They will be integrated by technical personnel of the competent agencies,
according to the matter corresponding to the committee, organizations of industrialists, service providers, traders, agricultural andlivestock, forest or fisheries producers; scientific or technological research centers, professionals’ colleges and consumers.
Competent agencies, in coordination with the technical secretary's office of the National Standardization Commission will
determine which organizations of those mentioned in the foregoing paragraph shall integrate the consultative committee inquestion, as well as in the cases of committees that must be constituted to participate in international standardization activities.
ARTICLE 63.- Competent agencies, according to the guidelines dictated by the National Standardization Commission, willorganize the national standardization consultative committees and will fix their operation rules. The agency that regulates thehighest number of activities of the process for a good or service within each committee will have the corresponding presidency.
They will be organized by subjects or sectors at national level and there may not be more than one committee per agency,
except for those cases duly justified before the Commission.
Added paragraph DOF 05-20-1997
ARTICLE 64.- The committees' resolutions shall be made by consensus; if this is not possible, by majority of votes ofmembers. For resolutions made by majority to be valid, at least half of the agencies represented in the committee shall votefavorably and the approving vote of its president shall be issued. In no case may an Official Mexican Standard contravening otherlegal or regulatory provisions be issued.
CHAPTER VI
On National Standards Bodies
ARTICLE 65. To operate as a national standards body, it is required to:
Reformed paragraph DOF 05-20-1997
I. Submit a registration application to the Secretariat, with a copy for the relevant agency;
Reformed section DOF 05-20-1997
II. Submit its statutes for approval by the Secretariat, which shall state that:a) Their corporate purpose is to standardize;b) Their standardization works are performed through committees integrated in a balanced way by technical personnel
representing at a national level producers, vendors, marketers, service providers, consumers, higher and scientific education
institutions, professionals' colleges, and general interest sectors and without excluding any sector of the society that may beinterested in their activities; and23 of 63

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Latest Reform DOF 12-18-2015c) Have national coverage; andIII. Have capability to participate in international standardization activities and have adopted the internationally accepted
code for the preparation, adoption and application of standards.
Reformed section DOF 05-20-1997
ARTICLE 66.- National standards bodies will have the following obligations:
I. Allow the participation of all interested sectors in the committees for the preparation of Official Mexican Standards, as well
as of the competent agencies and entities of the federal public administration;
II. Keep the notes of the sessions held by the committees and other deliberations, decisions or actions that allow verificationby the Secretariat, and submit the reports required by the Secretariat;
III. Publicly announce the draft Mexican Standards they intend to issue by means of a notice in the Official Journal of theFederation and address any information request that interested parties may make on these;
Reformed section DOF 05-20-1997
IV. Enter into cooperation agreements with the Secretariat so it may, among others, keep the collection of Mexican Standards
updated;V. Send to the technical secretary's office of the national Standardization Commission the Standards that have been preparedso their declaration of validity is published; andReformed section DOF 05-20-1997
VI. Have appropriate systems for the identification and classification of standards.
ARTICLE 67. Federal public administration entities shall constitute standardization committees for the preparation ofreference standards in accordance with which goods or services are acquired, leased or contracted, when Mexican or International
Standards do not meet their requirements or the specifications contained in such Standards are deemed inapplicable or obsolete.
Such committees will be constituted in coordination with the technical secretary's office of the National Standardization
Commission and will be adjusted as relevant to the provisions of Articles 62 and 64 of this Law. Prepared Standards shall comply
with the provisions of Article 51-A.
The specifications required by entities may be submitted to the committees where the respective Mexican Standards havebeen prepared, in order for them to make the update of the corresponding Mexican Standard.
Until the reference standards referred to in the first paragraph of this Article are prepared, entities may undertake acquisition,leasing or contracting in accordance with the specifications determined by the entities themselves, but they shall report on a biannual basis to the technical secretary's office of the National Standardization Commission on the progress of the work programsof such committees and justify the reasons why standards have not been completed.
Reformed article DOF 05-20-1997

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
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TITLE FOUR
ON ACCREDITATION AND DETERMINATION OF COMPLIANCE
Reformed name of Title DOF 20-05-1997
CHAPTER I
On Accreditation and Approval
Reformed name of Chapter DOF 05-20-1997
ARTICLE 68. The evaluation of conformity will be performed by competent agencies, by the Federal Telecommunications
Institute or by certifying bodies, testing or calibration laboratories and verification units that are accredited and, if appropriate,approved in terms of Article 70.
Reformed paragraph DOF 07-14-2014
The accreditation of the bodies, laboratories and units referred to in the foregoing paragraph will be performed byaccreditation entities, for which the interested party shall:
I.

Submit an application in writing to the relevant accreditation entity, together with, if any, its statutes and activities
proposal;

II.

State the standards it intends to evaluate, indicating the respective subject, sector, branch, field or activity, and describe
the services it intends to provide and the procedures to be used;

III. Demonstrate it has adequate technical, material and human capability in relation to the services it intends to provide, as
well as to the quality assurance procedures that ensure the performance of its functions; andIV. Others that are determined by this Law or its regulations.
Once the accreditation application has been integrated, the process will be in accordance with the provisions of the article
below.
Reformed article DOF 05-20-1997
ARTICLE 69. Accreditation entities will integrate evaluation committees, as accreditation support bodies, and, if applicable,
for approval by competent agencies.
Evaluation committees will be constituted by specific subjects, sectors and branches, and by technicians qualified withexpertise in the respective fields, as well as by representatives of producers, consumers, service providers and users of the service,and by the technical personnel of the accreditation entities and the competent agencies, in accordance with the guidelines dictatedby the Secretariat, upon prior opinion by the National Standardization Commission.
When evaluation committees do not have technicians in the respective fields, the accreditation entity will notify this to theapplicant and will adopt the necessary measures to have them.
The relevant evaluation committee will designate an evaluating group that will carry out the visits or actions necessary toverify the accreditation applicants have appropriate facilities, equipment, technical personnel, organization and operational
methods which ensure technical competence and reliability of services.
Expenses derived from accreditation, and well as the fees of the technicians who are required, will be at the expense of
applicants, who shall be informed about this at the moment they submit their application.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

If the assessment by the evaluation committee is not favorable, a term of 180 calendar days will be granted to the applicant tocorrect the failures that have been found. Such term may be extended by equal terms when the need for this is justified.
Reformed article DOF 05-20-1997
ARTICLE 70. Competent agencies and the Federal Telecommunications Institute may approve the accredited people
required for the evaluation of conformity regarding Mexican Standards, for which they will be subject to the following:
Reformed paragraph DOF 07-14-2014
I. Identify the Official Mexican Standards for which the evaluation of conformity by approved people is required and, if
applicable, publish this in the Official Journal of the Federation; andII. Participate in the evaluation committees for accreditation or recognize their results. Not to duplicate the requirements
requested for accreditation, notwithstanding the possibility to set forth additional requirements when it is reasonably
justified to the Secretariat they are needed in order to protect the purpose of the Official Mexican Standard and theresults of the evaluation of conformity with it and the verification of the applicant regarding the conditions for approval.
Reformed article DOF 05-20-1997
ARTICLE 70-A. To operate as an accreditation entity, it is required to have the authorization by the Secretariat, upon priorfavorable opinion of the majority of members of the National Standardization Commission referred to in section I of Article 59,
and comply with the following:
I. Accredit legal, technical, administrative and financial capability, for which the following shall be included:a) Bylaws or draft bylaws, detailing government bodies and the functional technical structure of the entity, where it is statedthe balanced representation of the interested productive, commercial and academic bodies, at a national level, in the accreditation
process;b) Listing of material and human resources in place, or a proposal regarding this, detailing the academic degree and expertiseof the latter on the particular subject matter; andc) Documents that prove financial solvency to ensure the continuity of the accreditation system;
II. Demonstrate its capability to address several subjects, sectors or activity branches;
III. Include, if appropriate, its agreements with other similar entities or entities specialized on the subject matter this Law
refers to; andIV. Indicate the maximum fees that would apply in its service provision.
Once the documentation has been integrated, the Secretariat will issue a report and will submit it to competent agencies for
opinion.
Added article DOF 05-20-1997
ARTICLE 70-B. The authorized accreditation entity shall:

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
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I. Resolve the submitted accreditation applications, issue the relevant accreditations and notify this to the competent agencies;
II. Comply at all times with the terms and conditions under which the authorization was granted;
III. Allow the presence of a representative of the competent agencies that request so in the development of their functions;IV. Integrate and coordinate the evaluation committees for accreditation in accordance with the guidelines provided by the
Secretariat, and integrate a national register of evaluators with relevant technicians;
V. Periodically verify compliance by the accredited people regarding the conditions and requirements that served as the basis
for their accreditation;
VI. Resolve the claims filed by people who are impacted by its activities and respond on their performance;
VII. Protect the confidentiality of the information obtained while performing its activities;
VIII. Participate in regional or international accreditation organizations for the preparation of criteria and guidelines on
accreditation and the mutual recognition of granted accreditations;
IX. Facilitate to agencies and the National Standardization Commission the information and technical assistance that are
required on accreditation matters and submit on a biannual basis a report on its activities to said Commission; andX. Keep a classified and updated catalog of accredited people for consult by any interested party.
Added article DOF 05-20-1997
ARTICLE 70-C. Accreditation entities and the people accredited by them shall:
I. Adapt to the rules, procedures and methods that are set forth in Official Mexican Standards, Mexican Standards and,otherwise, to International Standards;
II. Provide their services under non-discriminatory conditions and observe all other provisions on economic competition
matters;
III. Avoid the existence of conflicts of interests that may impact their performance and excuse themselves from acting whensuch conflicts exist;
IV. Resolve the claims of any interested party; andV. Allow the inspection or verification of their activities by the competent agency and also by the accreditation entities in thecase of accredited people.
When an accreditation entity or accredited and approved person has substantial power in the relevant market according to theFederal Law on Economic Competition, the Secretariat will have the power to establish specific obligations regarding fees,
quality and timeliness of the service.
Added article DOF 05-20-1997

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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

ARTICLE 71. Competent agencies and the Federal Telecommunications Institute may, at any time, make verification visits
to confirm compliance with this Law, its regulations and Official Mexican Standards, by the accreditation entities, accredited
people or any other entity or body that carries out activities related to the subject matters referred to in this Law, as well as thoseto which they provide services.
Reformed article DOF 05-20-1997, 07-14-2014
ARTICLE 72. The Secretariat will keep available for any interested party the listing of authorized accreditation entities andaccredited and approved people, by Standard, subject, sector or branch, as appropriate, as well as of the national standards bodies,
the institutions or entities referred to in Article 87-A and of the international bodies recognized by the Mexican government. Suchlisting will indicate, if applicable, suspensions and revocations and will be publish in the Official Journal of the Federation on aperiodic basis.
Reformed article DOF 05-20-1997
CHAPTER II
On Procedures for Conformity Assessment
Reformed name of Chapter DOF 05-20-1997
ARTICLE 73. Competent agencies will establish, in the case of Official Mexican Standards, the procedures for conformity
assessment when for official purposes it is required to verify compliance with them, which will be done according to the risk orprotection levels that are necessary to safeguard the purposes referred to in Article 40, upon prior consultation with the interested
sectors, observing this Law, its regulations and the international guidelines. Regarding Mexican Standards or other specifications,prescriptions or given characteristics, such procedures will be established when required.
Procedures referred to will be published for public consultation in the Official Journal of the Federation prior to their final
publication, unless they are contained in the relevant Official Mexican Standard or there is a grounded reason to the contrary.
When such procedures involve additional processes, a copy of these shall be submitted to the Secretariat for opinion, before
their final version is published. Likewise, if they involve measuring operations, there must be traceability to national standards
approved by the Secretariat or otherwise to foreign or international standards that are reliable according to the Secretariat.
Reformed article DOF 05-20-1997
ARTICLE 74. Agencies or accredited and approved people may evaluate conformity upon request from a party, for particular,
official or exporting purposes. Results will be stated in writing.
The assessment of conformity may be conducted by type, line, batch or lot of products, or by system, either directly at therelevant facilities or during the development of the activities, services or processes in question, and with the assistance of third
parties that are specialized on the relevant subject matter.
Reformed article DOF 05-20-1997
ARTICLE 75.- The contrast of jewelry and precious metalwork items made with silver, gold, platinum, palladium and anyother precious metals is mandatory, and the certification will be made on the items that contain as a minimum the metal finenessset forth in the respective Official Mexican Standards.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

CHAPTER III
On Official Passwords and Brands
ARTICLE 76. Competent agencies, in coordination with the Secretariat, may establish the characteristics of the official
passwords that denote the assessment of conformity regarding Official Mexican Standards and, when required, of Mexican
Standards.
Products or services subject to Official Mexican Standards and Mexican Standards may voluntarily bear the official
passwords when this does not induce the consumer or user to error on the characteristics of the good or service, if conformity has
been assessed by an accredited or approved person and the passwords are accompanied by the brands registered by such person
under the terms of the law on Industrial Property. For this, the authorization by the accredited people for the use of their registeredtrademarks shall be previously obtained.
Agencies may require that certain products bear such passwords on a mandatory basis, in which case the assessment ofconformity by the competent agency or the people accredited and approved for this will be required.
Reformed article DOF 05-20-1997
ARTICLE 77. (Abrogated)
Abrogated article DOF 05-20-1997
ARTICLE 78. Agencies may establish the emblems that denote accreditation and approval by the certifying bodies, testing
and calibration laboratories and verification units.
Reformed article DOF 05-20-1997
CHAPTER IV
On Certifying Bodies
ARTICLE 79. Competent agencies will approve the accredited certifying bodies per Official Mexican Standard under theterms of Article 70. Such approval may be granted by subject matter, sector or branch, provided that the body:
I. Has national coverage;
II. Demonstrates the participation, in its functional technical structure, of representatives of the interested sectors at national
level of producers, vendors, marketers, service providers, consumers, higher education and scientific institutions, professionals'
colleges, as well as those that may be impacted by its activities;
III. Has procedures that allow conducting its actions in the certification process independently from particular or groupinterests; andIV. Allows the presence of a representative of the competent agency that requests to in the development of its functions.
Reformed article DOF 05-20-1997
ARTICLE 80.- Certification activities shall be adapted to the rules, procedures and methods set forth in Official Mexican
Standards and, otherwise, to International Standards. Activities shall include the following:

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

I. Evaluation of the processes, products, services and facilities, by means of visual inspection, sampling, testing, field researchor review and evaluation of the quality programs;
Reformed section DOF 05-20-1997
II. Follow-up subsequent to the initial certification, in order to verify compliance with the Standards and have mechanismsthat allow protecting and avoiding the revelation of industrial or intellectual property of the client; andReformed section DOF 05-20-1997
III. Preparation of general criteria on certification matters through certification committees in which the interested sectors andagencies participate. In the case of Official Mexican Standards, the determined criteria shall be approved by the competent agency.
Added section DOF 05-20-1997
CHAPTER V
On Testing Laboratories
ARTICLE 81.- The National System for the Accreditation of Testing Laboratories is established in order to have a networkof accredited laboratories that have sufficient equipment, qualified technical personnel and any other requirements established in
the regulations, so they provide services related to the standardization referred to in this Law.
Accredited laboratories may denote such circumstance by using the official emblem of the national system for theaccreditation of testing laboratories.
Reform DOF 05-20-1997: The former third paragraph has been abrogated from the Article
ARTICLE 82. (Abrogated)
Abrogated article DOF 05-20-1997
ARTICLE 83. The result of the testing conducted by accredited laboratories will be stated in a report on results that will besigned by the person approved by the laboratory itself to do so. Such reports will be valid to the agencies and entities of thefederal public administration, provided that the laboratory has been approved by the competent agency.
Reformed article DOF 05-20-1997
CHAPTER VI
On Verification Units
ARTICLE 84.- Verification units may, upon request by the interested party, verify compliance with Official Mexican
Standards, only in those fields or activities for which they have been approved by competent agencies.
ARTICLE 85.- Assessments by verification units will be recognized by the competent agencies, as well as by the certifying
bodies, and based on these they may act in terms of this Law and in accordance with their respective attributions.
ARTICLE 86. Agencies may request the help of the verification units for evaluating conformity regarding Official Mexican
Standards, in which case they will be subject to the formalities and requirements set forth in this Law.
Reformed article DOF 05-20-1997
ARTICLE 87.- The result of the operations carried out by the verification units will be stated in a record that will be signed,
under his or her responsibility, by the accredited party in the case of individuals and by the owner of the establishment or thechairman of the board of directors, sole administrator or director-general of the verification unit itself, recognized by the agencies,

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

and will be valid once it has been recognized by the agency according to the functions for which it has been specificallyauthorized.
CHAPTER VII
On Mutual Recognition Agreements
Added chapter DOF 05-20-1997
ARTICLE 87-A. The Secretariat, by itself or upon request by any competent agency or interested party, may holdagreements with official foreign and international institutions for mutual recognition of the results of the assessment of conformity
carried out by agencies, accredited people and mentioned institutions, as well as the granted accreditations.
Accreditation entities and accredited people may also hold agreements with the indicated institutions or other private entities,
for which they will require the approval of the Secretariat. When such agreements have any relation with Official Mexican
Standards, the approval by agreement of the competent agency that issued the Standard in question and the publication of an
abstract in the Official Journal of the Federation will be also required.
Added article DOF 05-20-1997
ARTICLE 87-B. Agreements shall adjust to the provisions of international treaties signed by the United Mexican States, tothe regulations of this Law and, otherwise, to the international guidelines on the subject matter, and observe as principles that:
I. There is reciprocity;
II. They are mutually satisfactory to facilitate the trading of the national products, processes or services in question; andIII. They are preferably held between institutions and entities of the same nature.
Added article DOF 05-20-1997
TITLE FIVEON VERIFICATIONSINGLE CHAPTER
Verification and Monitoring
ARTICLE 88.- Individuals or legal entities will have the obligation to provide to the competent authorities with the
documents, reports and data that are required in writing, as well as the samples of products that are requested when necessary forthe purposes of this Law and any other provisions derived from it. In any case, regarding samples, the provisions of Articles 101
to 108 of this Law will rule.
ARTICLE 89. For purposes of control of compliance with Official Mexican Standards, agencies may integrate information
systems in accordance with the requirements and conditions determined in the regulations of this Law, and those established byagencies through provisions of a general nature, avoiding additional processes.
Agencies shall provide, upon request by the technical secretary's office of the National Standardization Commission or any
competent agency, the information contained in such systems and grant facilities for consultation by interested parties.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

Reformed article DOF 05-20-1997
ARTICLE 90. (Abrogated)
Abrogated article DOF 05-20-1997
ARTICLE 91. Competent agencies may carry out verification visits in order to monitor compliance with this Law and anyother applicable provisions, regardless of the procedures for the assessment of conformity that have been established. For such
purpose, the personnel authorized by the agencies may collect the necessary documents or evidence for this, as well as the
samples in accordance with the provisions of Article 101.
When in order to verify compliance with an Official Mexican Standard measurements or laboratory testing are required, thecorresponding verification will be only conducted in accredited and approved laboratories, unless these do not exist for the
specific measurement or test, in which case they may be conducted in other laboratories, preferably accredited ones.
Expenses incurred in to due to verification by actions of assessment of conformity will be charged to the person for whom it isperformed.
Reformed article DOF 05-20-1997
ARTICLE 92.- From each verification visit made by the personnel of the competent agencies or verification units, a detailed
record will be issued, regardless of the result, which will be signed by the representative of the agencies or units, or by the
representative of the laboratory in which it was performed and the manufacturer of service provider if they were involved.
Lack of participation by the manufacturer or service provider in the testing or their negative to sign the record will not affectits validity.
ARTICLE 93.- If the product or service does not satisfactorily meet the specifications, the Secretariat or competent agency,
upon request by the interested party, may authorize another verification to be performed in terms of this Law.
This verification may be performed, at the discretion of the agency, in the same laboratory or in another accredited laboratory,
in which case the expenses incurred into will be charged to the producer, manufacturer, importer, marketer or service provider. If
in this second verification it becomes demonstrated that the product or service satisfactorily meets the specifications, the first
result will be deemed devalued. If it is non-compliant, such result will be deemed confirmed.
ARTICLE 94.- For the purposes of this Law, a verification visit is understood as:
I. The one that is practiced in those places where the process, any phase of it, for products, measuring instruments or services
is performed, in order to visually confirm that the provisions of this Law and any provisions derived therefrom are complied with,and to verify everything related to the use of the measuring instruments, and/or
II. The one that is performed in order to confirm compliance with Official Mexican Standards, the content or net content and,if applicable, drained mass; determine the ingredients that constitute o integrate the products, if there is an obligation to indicate
their composition, the veracity of the commercial information or the precious metals fineness. This verification will be performedby sampling and, if applicable, laboratory testing.
Reformed section DOF 05-20-1997

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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

When there is competency concurrency, the verification will be performed by the competent agencies according to thecoordination bases that are established.
ARTICLE 95.- Verification visits performed by the Secretariat and competent agencies will be held on business days andtimes and only by authorized personnel, previously showing a valid identification and the respective duty official letter.
The authority may authorize them to be held on non-business days and times in order to avoid violations, in which case theduty official letter will express such authorization.
ARTICLE 96. Producers, owners, their subordinates or people in charge of industrial or commercial establishments in which
the process or any phase of it for products or measuring instruments is carried out or services are provided subject to compliancewith this law will be obliged to allow access and give the necessary facilities to the people authorized by the Secretariat or thecompetent agencies to practice the verification, provided that the requirements set forth in this Title are met.
When individuals obliged to observe this have an assessment, certificate, report or any other document issued by accredited
and approved people, under the terms of this Law, compliance with Official Mexican Standards will be recognized.
Reformed article DOF 05-20-1997
ARTICLE 97.- From all verification visits, a circumstantial record will be taken, in the presence of two witnesses proposedby the person with whom the procedure is performed or by the person who performs it if the former has refused to propose them.
A copy of any record will be delivered to the person with whom the procedure is performed, even though this person has
refused to sign, which will not affect the validity of the procedure or the document in question.
ARTICLE 98.- Records will state:
I. Name, registered name or corporate name of the establishment;
II. Time, day, month and year when the procedure is started and completed;
III. Street, number, settlement or community, municipality or borough, zip code and federative entity where the place of thevisit is located;
IV. Number and date of the duty official letter that gave way to the visit;
V. Name and title of the person with whom the procedure was performed;
VI. Name and address of the people who took the role as witnesses;
VII. Data related to proceeding;
VIII. Declaration of the visited party, if the party wants to do it; andIX. Name and signature of those involved in the procedure, including those who performed it.
ARTICLE 99.- Visited parties for whom a verification record has been taken may provide remarks on the procedure andoffer proof related to the facts contained in it or, in writing, make use of such right within the term of 5 business days following

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

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the date on which the record has been taken.
ARTICLE 100.- The separation or collection of product samples will only be applicable when the verification referred to in
section II of Article 94 shall be performed or when the visited party requests so.
ARTICLE 101.- The collection of samples will be performed subject to the following formalities:
I. Only those people expressly authorized by the Secretariat or the competent agency may collect them.
Also, approved accredited people may collect such samples for purposes of the assessment of conformity;
Reformed paragraph DOF 05-20-1997
II. Only the strictly necessary quantity of samples will be collected, which will be composed by:a) The number of pieces that compared to the batches to be examined form the sample batch in accordance with the Official
Mexican Standards or the procedures for the assessment of conformity published by competent agencies; andReformed subsection DOF 05-20-1997b) One or several fractions in the case of products shown in bulk, pieces, rolls, strips or any other form and which are usuallysold in fractions;III. Samples will be randomly selected and by the authorized people;
IV. In order to prevent their substitution, samples will be saved or protected in such way that it is not possible to tamper themwithout leaving evidence; andV. In any case, a relevant receipt will be granted in relation to the collected samples.
ARTICLE 102.- Samples will be collected in duplicate, leaving a portion of them under the protection of the visited
establishment. The first verification will be made on the other portion; if from this the result is that there are no contraventions to
the Standard in question, or to the provisions of this Law or any other provisions derived therefrom, the other sample will be
invalid and left available to the individual or legal entity from whom it has been obtained.
If in the first verification non-compliance with the respective Official Mexican Standard or with the net content or drainedmass is observed, the verification will be repeated if so requested, on the other portion of samples in the accredited laboratory andupon prior notification to the requester.
If from the result of the second verification it is inferred that samples are in the case of the first paragraph of this Article, thewhole batch will be deemed approved. If the deficiency found in the first verification is confirmed, actions will be taken in termsof Article 57.
The second verification shall be requested within five business days following that on which the result of the first verification
was known. If it is not requested, the result of the first verification will be deemed determined.
ARTICLE 103.- Samples may be collected from establishments where the process or any part of it is performed, invariably
upon prior order in writing.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
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If samples are collected from traders, manufacturers, producers or importers will be notified so, if desired, they participate in
the testing that will be conducted.
ARTICLE 104.- From confirmations carried out as a result of the verification visits a record will be issued, which will state:
I. If the envelope, container or packaging containing the samples has or does not have any evidence of having been tamperedor, if appropriate, if the individualized product was not substituted;
II. The quantity of samples on which the verification was performed;
III. The method or procedure that has been used, which shall be based on a Standard;
IV. The result of the verification; andV. Any other data the addition of which is necessary.
Records shall be signed by the people who conducted or were involved in the tests, and by the person in charge of thelaboratory, in the case of accredited laboratories. In all other cases, by the representative of the Secretariat or competent agency
who has been involved and by the producer, manufacturer, vendor, trader or importer who has been involved and wants to sign.
His or her refusal to sign will not affect the validity of the record.
ARTICLE 105.- The reports referred to in the foregoing article, whatever their result is, will be notified within 5 businessdays following the date of receipt of the laboratory report, to the manufacturers or vendors, traders or importers if samples werecollected from them. In the case of the people referred to in Article 84, reports shall be notified within 2 business days following
the receipt of the laboratory report, to the competent agency.
If the result is unfavorable to the producer, manufacturer, importer, vendor or trader, the notification will be made in such waythat the receipt date is stated.
ARTICLE 106.- When the result of the verification is notified, samples will be available for the person from whom they
were collected or, if applicable, the remaining material if its destruction was necessary, which will be announced to such person
so it is picked up within three business days in the case of perishable or easily decomposed items.
Manufacturers, producers and importers will have the obligation to replace for vendors or traders the destroyed samples
collected from them.
In the case of non-perishable products, if within a month counting from the date on which the result is notified the remaining
samples or material are not picked up, the use deemed convenient by the person who has collected them will be decided.
ARTICLE 107.- If the verification shows a given deficiency of the product, the following will be done:
I. In the case of non-compliance with specifications fixed in Official Mexican Standards, the provisions of Article 57 shall beobserved;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
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II. In the case of deficiencies in the net content or drained mass, the provisions of Article 23 shall be observed;
III. If materials, elements, substances or ingredients that constitute or integrate the product do not correspond to the indication
they bear or their percentage is inaccurate against the consumer, the sale of the whole batch or, if applicable, of the entire similar
production will be prohibited, until such indications are corrected. If this is not possible, their sale will be allowed at the pricecorresponding to their true composition, provided that this does not involve any risks for human, animal or plant health or forecosystems; andIV. In the case of a service provision unfavorable to the consumer, its provision will be suspended until the relevant
specifications are met.
Resolutions ordered based on this Article will not be in detriment of the applicable sanctions.
ARTICLE 108.- In the case of the verification of specifications contained in Official Mexican Standards, regarding net
content, drained mass, product composition or precious metals fineness, while the respective verification of the batch from where
samples were obtained is carried out, the product may only be marketed under the strict responsibility of the owner of theestablishment or the administrative body or sole administrator of the company.
Only in those cases in which there is a grounded reason to suppose the marketing of the product may severely damage thehealth of people, animals or plants, or the environment or ecosystems, irreversibly, the batch from where samples were obtained
cannot be marketed and will be under the possession and responsibility of the owner of the establishment or the board of directors
or sole administrator of the company from where samples were collected. If no reasons for infraction are found, the marketing of
the batch will be immediately permitted.
If non-compliance with the specifications or indication of net content, drained mass, product composition or precious metal
fineness are confirmed, actions will be taken as indicated in the foregoing Article.
When the verification and sampling procedure is referred to products, activities or services regulated by the General Health
Law, the provisions of this legal set of laws shall be observed.
ARTICLE 109.- When the data or information contained in labels, containers or packaging of products, whatever they may
be, as well as their advertisement, are inaccurate, the Secretariat or competent agencies may order in a coordinated manner tomodify them, providing the strictly necessary time lapse for this, notwithstanding the imposition of the applicable sanction.
TITLE SIXON INCENTIVES, SANCTIONS AND APPEALSCHAPTER I
On the National Quality Award
ARTICLE 110.- The National Quality Award is established in order to annually recognize and award the effort of national
manufacturers and service providers that constantly improve the quality of industrial processes, products and services, procuring
total quality.

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CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

ARTICLE 111.- The procedure for selecting the individuals or legal entities deserving the aforementioned award, the way touse it and any other necessary instructions will be established in the regulations of this Law.
CHAPTER II
On Sanctions
ARTICLE 112.- Non-compliance with the provisions of this Law and all other provisions derived therefrom will beadministratively sanctioned by agencies according to their attributions and based on the verification records and assessments byaccredited laboratories that are submitted to the agency in charge of monitoring compliance with the Standards in accordance withthe provisions of this Law. Notwithstanding the sanctions set forth in other sets of laws, the applicable sanctions will be as
follows:
I. Fine;Reformed section DOF 05-20-1997
II. Temporary or permanent closing down, which may be partial or total;
III. Arrest for up to thirty-six hours;
Reformed section DOF 05-20-1997
IV. Suspension or revocation of the authorization, approval or registration, as appropriate; andReformed section DOF 05-20-1997
V. Suspension or cancellation of the document stating the results of the assessment of conformity, as well as of theauthorization for the use of passwords and registered trademarks.
Added section DOF 05-20-1997
ARTICLE 112-A. The following behaviors or omissions will be sanctioned with a fine:I. From twenty to three thousand times the minimum salary when:a) Agencies are not provided with required reports regarding the subject matters anticipated in this Law;b) The required document proving compliance with Official Mexican Standards is not shown; orc) An Official Mexican Standard related to trading information is contravened and this does not represent deceit for
consumers;
II. From five hundred to eight thousand times the minimum salary when:a) A product, process, method, facility, service or activity subject to an assessment of conformity is substantially modified
without having notified the competent agency or accredited and approved person who has assessed it;b) The conditioning, reprocessing, repair, substitution or modification referred to in Articles 57 and 109 is not carried out
under the terms indicated by the competent agency;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
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Latest Reform DOF 12-18-2015c) Any document stating the results of the assessment of conformity, the authorization for the use of a password,emblem or registered trademark or proving compliance with this Law and its derived provisions is used for other purpose
than the one that caused its issuance;d) The provisions contained in Official Mexican Standards are contravened;e) Any violation to this Law which is not included in this Article;
III. From three thousand to fourteen thousand times the minimum salary when:a) Behaviors or omissions that involve deceit to consumers or that constitute a practice that may induce to error are
undertaken;b) Passwords, registered trademarks, emblems, banners, stickers or any other badges are used without appropriate
authorization; orc) Immobilized products or services are disposed of;IV. From five thousand to twenty thousand times the minimum salary when behaviors or omissions that involve serious riskfor human, animal, plant or environmental health, life or safety are undertaken or all other cases included in Article 40;
For the purposes of this Article, minimum salary will be understood as the current daily minimum salary in the Federal
District at the moment the infraction is committed.
Added article DOF 05-20-1997
ARTICLE 113.- In all cases of re-occurrence, the fine imposed by the foregoing section will be duplicated, but in each casethe total amount will not exceed the double of the maximum fixed in the foregoing Article.
Re-occurrence is understood, for the purposes of this Law and any other provisions derived therefrom, each of the subsequent
infractions to a single precept, which are committed within two years following the date of the record stating the precedent
infraction, provided that it has not been devalued.
ARTICLE 114.- Sanctions will be imposed based on the taken records, on the results of confirmations or verifications, on thedata held on products, their labels, containers or packaging for the omission of what they should hold, based on the documents
issued by the people referred to in Article 84 of the Law or based on any other element or circumstance from which it is inferredthat there is an irrefutable infraction to this Law or any other provisions derived therefrom. In any case, resolutions on sanction
matters shall be grounded and caused taking into consideration the criteria set forth in the following Article.
ARTICLE 115.- For determining sanctions the following must be considered:
I. The intentional or unintentional nature of the action or omission that constitutes the infraction;
II. The seriousness of the infraction in relation to the marketing of products or the provision of services, as well as the damage
caused to consumers; andIII. The economic conditions of the offender.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

ARTICLE 116.- When a single record states several infractions, fines will be determined separately and the respective
resolution will be issued by the resulting sum of all of them.
Besides, when a single record includes two or more offenders, each of them will deserve the applicable sanction. If theoffender did not participate in the procedure, he/she will be allowed to review the record for ten business days, after which, if theinfraction is not devalued, the corresponding sanction will be imposed.
When the reason for an infraction is the use of several measuring instruments, the fine will be computed in relation to each ofthem, and if there are several infringed instructions these will also be determined separately.
ARTICLE 117.- Applicable sanctions in accordance with this Law and all other provisions derived therefrom will be
imposed notwithstanding the sentences applicable to the crimes incurred into by offenders.
ARTICLE 118. The Secretariat and competent agencies, by operation of law, upon request by the National Standardization
Commission or any interested party, by prior compliance with the right to a hearing according to the provisions of the Federal
Law on Administrative Procedure, may fully or partially suspend the registration, authorization or approval, as appropriate, of
national standards bodies, accreditation entities or accredited people when:
Reformed paragraph DOF 05-20-1997
I.

They do not provide to the Secretariat or competent agencies in a timely and complete manner the reports that are
required regarding their functioning and operation;II.

The verification and monitoring functions are impeded or obstructed;
Reformed section DOF 05-20-1997

III. The resources or capacity necessary to carry out their functions are reduced or if they stop observing the conditions inaccordance with which the authorization or approval had been granted;
Reformed section DOF 05-20-1997
IV. The accreditation granted by an accreditation entity is suspended; orAdded section DOF 05-20-1997
V.

They repeat the misuse of an official password, registered trademark or emblem.
Added section DOF 05-20-1997

In the case of national standards bodies, the suspension of the registration to operate will be applicable when they incur in theassumptions of sections I and II of this Article or when any of the requirements or obligations referred to in Articles 65 and 66 is
no longer met.
Reformed paragraph DOF 05-20-1997
For calibration laboratories, in addition to the provisions of the foregoing sections, the suspension will be applicable when it isdemonstrated that the level of accuracy with which it had been authorized has been degraded or when the provisions ruling theoperation of the National Calibration System are not fulfilled.
The suspension will last as long as the respective requirements or obligations are not complied with, and this can be done only
to the area of non-compliance whenever possible.
Reform DOF 05-20-1997: The former second paragraph has been abrogated from the Article

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FEDERAL LAW ON METROLOGY AND STANDARDIZATION
Latest Reform DOF 12-18-2015

CHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

ARTICLE 119. The Secretariat and competent agencies, by operation of law, upon request by the National Standardization
Commission or any interested party, by prior compliance with the right to a hearing according to the provisions of the Federal
Law on Administrative Procedure, may partially or fully revoke the authorization or approval, as appropriate, of the accreditation
entities or accredited people when:
I. They issue accreditations, certificates, assessments, records or any other document containing false information in relation
to the activities for which they were authorized, accredited or approved;
II. They repeatedly or unjustifiably deny the requested service;
III. They repeat the assumptions referred to in sections I and II of the foregoing Article, or in the case of section III of said
Article, the reduction of resources or capability to issue certificates or assessments extends for more than three consecutive
months; or
IV. They expressly waive the granted authorization, accreditation or approval. In the case of accredited people, if theiraccreditation is canceled by an accreditation entity.
The revocation will entail the delivery to the competent authority of the documentation related to the activities for which said
entities were authorized and approved, the prohibition to hold themselves as such and to use any kind of information or emblem
related to those activities.
Reformed article DOF 05-20-1997
ARTICLE 120. The Secretariat, by operation of law, or upon request by competent agencies, the National Standardization
Commission or any interested party, by prior compliance with the right to a hearing according to the provisions of the Federal
Law on Administrative Procedure, may cancel the registration to operate to national standards bodies when:
I. The infractions referred to in Article 118 are repeated;
II. Mexican Standards are issued without consensus or if the intention to favor the interests of a sector is evident; orIII. In the case of section III of Article 118, the reduction of resources or capability to issue Standards extends for more than
three consecutive months.
Reformed article DOF 05-20-1997
ARTICLE 120-A. When derived from a verification the commission of an infraction is determined and the visited party has adocument issued by an accredited and approved person, the latter will be imposed a fine equivalent to that applicable to the visitedparty by virtue of the infraction incurred into, provided that there is negligence, fraud or bad faith in such issuance,
notwithstanding the other applicable sanctions.
Added article DOF 05-20-1997
CHAPTER III
On the Review Appeal and Complaints
Reformed name of Chapter DOF 05-20-1997
ARTICLE 121. People affected by the resolutions decided based on this Law and any other provisions derived therefrom
may file a review appeal in terms of the Federal Law on Administrative Procedure.
Reformed article DOF 05-20-1997

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

ARTICLE 122. Accreditation entities, as well as accredited and approved people, shall resolve the complaints filed byinterested parties and notify the affected party of their response within a term not exceeding 10 business days, with a copy for thecompetent agencies.
If the affected party does not agree with the issued response, this may be stated in writing before the relevant agency,
including the documents on which the disagreement is supported. The agency will forward a copy to the entity or person who
issued the response so that within a term not exceeding 5 business days a report justifying the decision is submitted.
From the analysis of the report submitted by the accreditation entity or accredited and approved people, the relevant agency
may require them to reconsider their decision or, if applicable, will proceed to apply the relevant sanctions.
If the report is not submitted, the statements by the affected party will be assumed as true and the agency will proceed
according to the foregoing paragraph.
The accreditation entities and accredited people shall keep at the disposal of competent agencies the complaints that havebeen filed.
Reformed article DOF 05-20-1997
ARTICLE 123. (Abrogated)
Abrogated article DOF 05-20-1997
ARTICLE 124. (Abrogated)
Abrogated article DOF 05-20-1997
ARTICLE 125. (Abrogated)
Abrogated article DOF 05-20-1997
ARTICLE 126. (Abrogated)
Abrogated article DOF 05-20-1997
ARTICLE 127. (Abrogated)
Abrogated article DOF 05-20-1997
TRANSITORY ARTICLESFIRST. This Law will enter into force 15 calendar days following its publication in the Official Journal of the Federation.
SECOND. The Law on Metrology and Standardization, published in the Official Journal of the Federation on January 26,
1988, is abrogated.
THIRD. The validity term of the Standards or technical specifications, criteria, rules, instructions, notices, guidelines and anyother provisions of analog and mandatory nature on the subject matters referred to in this Law, which have been issued by thefederal public administration agencies before its entering into force, may not exceed 15 months from the effective date of this Law.
FOURTH. For the purposes of Article 91, during 365 calendar days following the date of publication of this Law in the
Official Journal of the Federation, verifications may also be conducted in the laboratories of the Secretariat or of the competentagencies. After this term has elapsed, only public or private accredited laboratories make serve this purpose.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

FIFTH. Voluntary Official Mexican Standards that have been issued before the effective date of this Law remain valid.
Within 180 calendar days following the effective date of the Law, the Secretariat shall modify their name for Mexican Standards
by means of an agreement. The Secretariat may issue Mexican Standards in the areas that are not addressed by national standards
bodies. Mexican Standards issued by the Secretariat in terms of this Article shall differentiate from those issued by national
standards bodies.
Mexico, Federal District, June 18, 1992.- Senator Manuel Aguilera Gómez, Chairman.- Deputy Jorge Zermeño Infante,
Chairman.- Senator Antonio Melgar Aranda, Secretary.- Deputy Felipe Muñoz Kapamas, Secretary.- Signatures."
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States and for duly
publication and observance, I hereby issue this Decree in the residency of the Federal Executive Branch, in Mexico City, Federal
District, on the thirtieth day of the month of June, nineteen ninety-two.- Carlos Salinas de Gortari.- Signature.- The Secretary of
the Interior, Fernando Gutiérrez Barrios.- Signature.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

TRANSITORY ARTICLES OF REFORM DECREES
DECREE modifying, adding and abrogating several provisions of the Federal Law on Administrative Procedure; ofthe Federal Law on Metrology and Standardization; of the Mining Law; of the Foreign Investment Law; of the GeneralLaw of Commercial Corporations and of the Civil Code of the Federal District on local matters and for all the Republic onfederal matters.
Published in the Official Journal of the Federation on December 24, 1996
SECOND ARTICLE.- Section V of Article 39 is reformed; the two last paragraphs of Article 51 are added and Article 49of the Federal Law on Metrology and Standardization is abrogated, to be as follows:..........
TRANSITORY ARTICLESFIRST.- This Decree will enter into force the day after its publication in the Official Journal of the Federation, except forthe provisions of the following article.
SECOND.- The second paragraph of Article 10 A of the Foreign Investment Law will enter into force on the thirtiethbusiness day following the date on which this Decree is published in the Official Journal of the Federation. Within this period,
the list referred to in such precept shall be published.
Mexico, Federal District, December 10, 1996.- Senator Laura Pavón Jaramillo, Chairwoman.- Deputy Felipe Amadeo
Flores Espinosa, Chairman.- Senator Ángel Ventura Valle, Secretary.- Deputy Carlos Núñez Hurtado, Secretary."
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States and for duly
publication and observance, I hereby issue this Decree in the residency of the Federal Executive Branch, in Mexico City, Federal
District, on the eighteenth day of the month of December, nineteen ninety-six.- Ernesto Zedillo Ponce de León.- Signature.- The
Secretary of the Interior, Emilio Chuayffet Chemor.- Signature.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

DECREE reforming, adding and abrogating several provisions of the Federal Law on Metrology and Standardization.
Published in the Official Journal of the Federation on May 20, 1997
SINGLE ARTICLE. Sections I, X, XI and XVII of Article 3, Article 12, the first paragraph or Article 17, the first paragraphand section I of Article 25, Article 26, section VII of Article 30, sections II, IV, VI, VII and VIII of Article 38, the first paragraphand sections IV, V, VIII and IX of Article 39, the name of Chapter II from Title Three, sections I and VI of Article 41, the fourthparagraph of Article 44, Article 45, sections I and III of Article 47, the second paragraph or Article 48, the second paragraph of
Article 50, the second and third paragraphs of Article 53, the second paragraph of Article 55, sections I and III and the fourth andfifth paragraphs of Article 59, sections III, V, VII and VIII of Article 60, the first paragraph and sections I and III of Article 65,
sections III and V of Article 66, Article 67, the name of Title Four and its Chapter I, Articles 68, 69, 70, 71 and 72, the name ofChapter II of Title Four, Articles 73, 74, 76, 78 and 79, sections I and II of Article 80, Articles 83, 86, 89 and 91, section II of
Article 94, Article 96, the second paragraph of section I and subsection a) of section II of Article 101, sections I, III and IV of
Article 112, the first paragraph, sections II and III and the third paragraph of Article 118, Articles 119, 120, 121 and 122 arereformed; sections IV-A, X-A, XV-A and XVIII are added to Article 3, section IX to Article 38, sections X, XI and XII to
Article 39, Section I to Chapter II of Title Three, a last paragraph to Article 40, a second-to-last and a last paragraph to Article 51,
Section II to Chapter II of Title Three, Articles 51-A and 51-B, a second-to-last and a last paragraph to Article 55, Article 61-A, alast paragraph to Article 63, Articles 70-A, 70-B and 70-C, section III to Article 80, Chapter VII to Title Four, Articles 87-A and
87-B, section V to Article 112, Article 112-A, sections IV and V to Article 118, Article 120-A; and section XIX of Article 3,
Article 28, sections VI and XIV of Article 40, Articles 42 and 77, the third paragraph of Article 81, Articles 82 and 90, the second
paragraph of Article 118 and Articles 123 to 127 are abrogated for the Federal Law on Metrology and Standardization to be as
follows:..........
TRANSITORY ARTICLESFIRST. This decree will enter into force on August 1, 1997.
SECOND. Provisions opposing to the provisions of this decree are abrogated, particularly those relating to the preparation of
Official Mexican Standards and the approval of national standards bodies, certifying bodies, testing and calibration laboratories
and verification units, contained in other sets of laws.
THIRD. The approval and accreditation of the national standards bodies, certifying bodies, testing and calibrationlaboratories and verification units granted before the effective date of this decree will be recognized under the terms they havebeen granted. For the renewal of the approval and accreditation and, if applicable, for registration of such entities, the provisions
contained in this decree will be applied.
FOURTH. Until the authorization of accreditation entities is published in the Official Journal of the Federation and theytake office, the Secretariat of Commerce and Industrial Development will be in charge of the accreditation of certifying bodies,
testing and calibration laboratories and verification units.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

FIFTH. Draft Official Mexican Standards published for public consultation prior to the date of entry into force of this decree
will be adjusted for issuance according to the provisions in force at the time they were issued.
SIXTH. For the purposes of the provisions of the second-to-last paragraph of Article 59 of the Law, the chairmanship of the
National Standardization Commission will last one year from the end of the office period of the current chairman on the effective
date of this decree.
SEVENTH. The Secretariat will determine and communicate to agencies the way in which the statement of regulatory impact
referred to in Article 45 shall be submitted within 30 calendar days following the publication of this decree in the Official
Journal of the Federation, upon prior opinion by the National Standardization Commission.
EIGHTH. The time periods for the review and update of Official Mexican Standards and Mexican Standards referred to in
Articles 51 and 51-A of the Law will start from the effective date of this decree.
NINTH. The publication of the procedures referred to in Article 73 of the Law shall be carried out within 6 months following
the effective date of this decree. Until such procedures are published, agencies will continue determining compliance with Official
Mexican Standards in accordance with the applicable provisions before the effective date of this decree.
TENTH. Infractions incurred into before the effective date of this decree will be sanctioned in accordance with the provisions
at the moment they were committed, unless the entity or individual chooses to be subject to the provisions of this decree."
Mexico, Federal District, April 28, 1997.- Senator Judith Murguía Corral, Chairwoman.- Deputy Ezequiel Flores
Rodríguez, Chairman.- Senator Sergio Magaña Martínez, Secretary.- Deputy Luis Alberto Rico Samaniego, Secretary.Signatures."
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States and for duly
publication and observance, I hereby issue this Decree in the residency of the Federal Executive Branch, in Mexico City, Federal
District, on the fifteenth day of the month of May, nineteen ninety-seven.- Ernesto Zedillo Ponce de León.- Signature.- The
Secretary of the Interior, Emilio Chuayffet Chemor.- Signature.

45 of 63

FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

DECREE reforming Article 13 of the Federal Law on Metrology and Standardization.
Published in the Official Journal of the Federation on May 19, 1999
SINGLE ARTICLE. - Article 13 of the Federal Law on Metrology and Standardization is reformed to be as follows:..........
TRANSITORY ARTICLESINGLE. - This Decree will enter into force the day after its publication in the Official Journal of the Federation.
Mexico, Federal District, April 29, 1999.- Deputy Juan Moisés Calleja Castañón, Chairman. - Senator Héctor Ximénez
González, Chairman. - Deputy Mario Guillermo Haro Rodríguez, Secretary. - Senator Ignacio Vázquez Torres, Secretary.Signatures".
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States and for duly
publication and observance, I hereby issue this Decree in the residency of the Federal Executive Branch, in Mexico City, Federal
District, on the seventeenth day of the month of May, nineteen ninety-nine.- Ernesto Zedillo Ponce de León.- Signature.- The
Secretary of the Interior, Francisco Labastida Ochoa.- Signature.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

DECREE reforming several provisions of the Federal Law on Metrology and Standardization and of the General Law
of Commercial Companies.
Published in the Official Journal of the Federation on July 28, 2006
First Article. Articles 1, second paragraph; 32, first paragraph; 37, section II, and 59, section I, all of the Federal Law on
Metrology and Standardization, are reformed to be as follows:..........
TRANSITORY ARTICLE
Single.- This Decree will enter into force the day after its publication in the Official Journal of the Federation.
Mexico, Federal District, March 16, 2006.- Deputy Marcela González Salas P., Chairwoman.- Senator Enrique Jackson
Ramírez, Chairman.- Deputy Marcos Morales Torres, Secretary.- Senator Saúl López Sollano, Secretary.- Signatures."
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States, and for duly
publication and observance, I hereby issue this Decree in the Residency of the Federal Executive Branch, in Mexico City, Federal
District, on the twenty-fifth day of the month of July, two thousand six.- Vicente Fox Quesada.- Signature.- The Secretary of theInterior, Carlos María Abascal Carranza.- Signature.

47 of 63

FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

DECREE reforming Article 13 of the Federal Law on Metrology and Standardization.
Published in the Official Journal of the Federation on April 30, 2009
Single Article. Article 13 of the Federal Law on Metrology and Standardization is reformed to be as follows:……….
TRANSITORY ARTICLESFirst Article. This Decree will enter into force 210 calendar days following its publication in the Official Journal of theFederation.
Second Article. The provisions of this Decree will not be applicable to containers that have been constructed before its
effective date.
Mexico, Federal District, April 1, 2009.- Deputy Cesar Horacio Duarte Jaquez, Chairman.- Senator Gustavo Enrique
Madero Muñoz, Chairman.- Deputy Rosa Elia Romero Guzman, Secretary.- Senator Claudia Sofía Corichi Garcia,
Secretary.- Signatures."
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States, and for duly
publication and observance, I hereby issue this Decree in the Residency of the Federal Executive Branch, in Mexico City, Federal
District, on the twenty-fourth day of April, two thousand nine.- Felipe de Jesús Calderón Hinojosa.- Signature.- The Secretaryof the Interior, Fernando Francisco Gómez Mont Urueta.- Signature.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

DECREE reforming several Federal Laws in order to update all articles referring to the State Secretariats the name ofwhich has been modified and to the Government of the Federal District in all applicable matters; and to eliminate themention of administrative departments that are not valid anymore.
Published in the Official Journal of the Federation on April 9, 2012
FIFTY-THIRD ARTICLE Article 59, section III, first paragraph of the Federal Law on Metrology and Standardization isreformed to be as follows:……….
TRANSITORY ARTICLESFirst. This decree will enter into force the day after its publication in the Official Journal of the Federation.
Second. From the date on which this Decree enters into force, those provisions contravening or opposing to it will become
invalid.
Mexico, Federal District, February 21, 2012.- Deputy Guadalupe Acosta Naranjo, Chairwoman.- Senator José González
Morfín, Chairman.- Deputy Laura Arizmendi Campos, Secretary.- Senator Renán Cleominio Zoreda Novelo, Secretary.Signatures."
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States, and for duly
publication and observance, I hereby issue this Decree in the Residency of the Federal Executive Branch, in Mexico City, Federal
District, on the thirtieth day of March, two thousand twelve.- Felipe de Jesús Calderón Hinojosa.- Signature.- The Secretary of
the Interior, Alejandro Alfonso Poiré Romero.- Signature.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

DECREE issuing the Federal Telecommunications and Broadcasting Law, and the Law of the Public Broadcasting
System of the Mexican State; and reforming, adding, and abrogating several provisions on telecommunications andbroadcasting matters.
Published in the Official Journal of the Federation on July 14, 2014
SEVENTH ARTICLE.- Section VII of Article 39; the first paragraph of Article 68; the first paragraph of Article 70; andArticle 71 of the Federal Law on Metrology and Standardization are reformed to be as follows:………
TRANSITORY ARTICLESFIRST. This Decree will enter into force on the thirtieth calendar day following its publication in the Official Journal of theFederation, notwithstanding what is set forth in the transitory articles below.
SECOND. The Federal Law on Telecommunications and the Federal Law on Radio and Television are abrogated. The
provisions of the General Means of Communication Law become invalid where they oppose to the provisions of the Federal
Telecommunications and Broadcasting Law, which is issued by virtue of this Decree.
THIRD. Regulatory and administrative provisions and Official Mexican Standard in force will continue being applied until
the new sets of laws substituting them are issued, except for those portions opposing to the Federal Telecommunications andBroadcasting Law, which is issued by virtue of this Decree.
FOURTH. The Federal Telecommunications Institute shall adapt its organic statute to the Federal Telecommunications andBroadcasting Law within sixty days following the effective date of this Decree.
FIFTH. The Federal Executive Branch shall issue, within one hundred eighty calendar days following the issuance of thisDecree, the regulatory provisions and guidelines on content matters set forth in the Federal Telecommunications and Broadcasting
Law issued by virtue of this Decree.
Restricted broadcasting and television or sound concessionaires cannot promote video games that have not been classified
according to the applicable regulation, which shall be issued by the Federal Executive Branch within the term referred to in theforegoing paragraph.
SIXTH. The attention, processing and resolution of issues and procedures that have started prior to the effective date of thisDecree will be carried out under the terms set forth in the Seventh Transitory Article of the Decree reforming and adding several
provisions of Articles 6, 7, 27, 28, 73, 78, 94 and 105 of the Constitution of the United Mexican States on telecommunications
matters, published in the Official Journal of the Federation on June 11, 2013. The foregoing notwithstanding the provisions of theTwentieth Transitory Article of this Decree.
SEVENTH. Notwithstanding the provisions of the Federal Telecommunications and Broadcasting Law issued by virtue of
the Decree, in the law and regulation issued for such purpose by the Federal Telecommunications Institute, concessions andpermits granted before the effective date of this Decree will be kept under the terms consigned in the respective titles or permits

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

until their termination, unless an authorization to provide additional services to those that are the subject matter of theirconcession is obtained or if a changed has been made to pass to the single concession provided for in the Federal
Telecommunications and Broadcasting Law, in which case, the terms and conditions set forth by the Federal Telecommunications
Institute shall be observed.
In the case of radioelectric spectrum concessions, the authorized coverage and quantity of Megahertz granted in concession
cannot be modified regarding the concession period, and the conditions of doing or not doing provided for in the title of origin
concession and that have been crucial for the granting of the concession cannot be modified either.
EIGHTH. Except for the provisions of Transitory Tenth and Eleventh Articles of this Decree, the current concessionaires
may obtain an authorization by the Federal Telecommunications Institute to provide additional services to those that are thesubject matter of their concession or to make a change to pass to the single concession, provided they are compliant with the
obligations anticipated in the laws on their concession titles. Concessionaires who have radioelectric spectrum concessions shall
pay the corresponding considerations in terms of the Federal Telecommunications and Broadcasting Law.
Concessionaires who have several concession titles, additionally to being able to make a change to pass to the single
concession, may consolidate their titles in one single concession.
NINTH. While there is a prevailing economic agent in the telecommunications and broadcasting sectors, in order to promotecompetition and develop feasible competitors in the long term, concentrations performed between economic agents who areholders of concessions or the concession assignments and control changes derived therefrom that meet the following requirements
will not need an authorization by the Federal Telecommunications Institute:a.

Generate a sectorial reduction of the Dominance Index "DI" provided that the Hirschman-Herfindahl
Index "HHI" is not increased by more than two hundred points;b.

Result in the economic agent having a percentage of sectorial interest lower than twenty percent;c.

That the prevailing economic agent in the sector where the concentration is carried out does notparticipate in such concentration, andd.

Their effect is not the reduction, damage or obstruction of free competition and concurrency in therelevant sector.

Hirschman-Herfindahl Index "HHI" means the sum of squares of the interest of each economic agent (HHI=i qi2) in therelevant sector, measured for the case of the telecommunications sector based on the indicator of number of subscribers and usersof telecommunications services, and for the broadcasting sector based on the audience. This index may take values between zeroand ten thousand.
To calculate the Dominance Index "DI", first the hi percentage contribution of each economic agent to the HHI index definedin the foregoing paragraph is determined (hi = 100xqi2/HHI). Then, the DI value will be calculated by applying the HirschmanHerfindahl formula, but using now hi contributions instead of qi interest (i.e., DI=i hi2). This index also varies between zero andten thousand.
Economic agents shall submit to the Federal Telecommunications Institute, within 10 days following the concentration, a
notice in writing that will contain the information referred to in Article 89 of the Federal Law on Economic Competition referring

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

to the relevant sector, as well as the certainty elements that demonstrate the concentration complies with the foregoing subsections.
The Institute will investigate such concentration within a period not exceeding ninety calendar days and, in case of finding
there is substantial power in the telecommunications network market that provide voice, data or video services or in the one forradio and television, according to the sector in question, it may impose the required measures to protect and foster in such market
free competition and concurrency, in accordance with the provisions of the Federal Telecommunications and Broadcasting Law
and the Federal Law on Economic Competition notwithstanding the concentrations referred to in this Article.
Measures imposed by the Institute will end when prevailing economic agents are authorized to provide additional services.
TENTH. Prevailing economic agents and concessionaires whose concession titles contain any express prohibition or
restriction to provide certain services, prior to the start of the process to obtain authorization for providing additional services, willaccredit before the Federal Telecommunications Institute, and the latter will supervise effective compliance with the obligations
set forth in the Decree reforming adding several provisions of Articles 6, 7, 27, 28, 73, 78, 94 and 105 of the Constitution of theUnited Mexican States, on telecommunications matters, published in the Official Journal of the Federation on June 11, 2013, of
the Telecommunications and Broadcasting Law, as well as of the Federal Law on Economic Competition, their concession titles
and applicable administrative provisions, in accordance with the following:
I.

Prevailing economic agents shall accredit before the Federal Telecommunications Institute that they
are in effective compliance with the foregoing and with the measures issued by the Federal
Telecommunications Institute itself referred to in sections III and IV of the Eighth Transitory Articleof the aforementioned Decree. For such purpose, the Federal Telecommunications Institute will set
forth the manner and terms to submit the respective information and documentation;II.

The prevailing economic agent shall be in effective compliance with the measures referred to in
section I above at least for eighteen consecutive months;

III.

Once the period referred to in the foregoing section has elapsed, and provided there is still
compliance with the provisions of section I above, the Federal Telecommunications Institute will
resolve and issue an assessment certifying that there was effective compliance with the mentioned
obligations; andIV.

Once the concessionaire has obtained the certification on compliance, he/she may request to theFederal Telecommunications Institute the authorization for additional service.

The provisions of this Article will also be applicable in case the respective agents and concessionaires choose to pass to thesingle concession.
The provisions of this Article will not be applicable after five years have elapsed counting from the effective date of theFederal Telecommunications and Broadcasting Law, provided that the prevailing economic agent in the telecommunications
sector is in compliance with the Eighth Transitory Article of this Decree, the measures that have been imposed in accordance withthe provisions of sections III and IV of the Eighth Transitory Article of the Decree reforming and adding several provisions ofArticles 6, 7, 27, 28, 73, 78, 94 and 105 of the Constitution of the United Mexican States, on telecommunications matters,

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

published in the Journal of the Federation on June 11, 2013, and those that have been imposed by the Federal
Telecommunications Institute in terms of the Federal Telecommunications and Broadcasting Law.
ELEVENTH. The process for the request referred to in the foregoing Article will be subject to the following:
I.

Prevailing economic agents and concessionaires whose concession titles contain an express prohibition or restriction toprovide certain services, shall comply with the provisions of the guidelines of the Federal Telecommunications Institutein terms of the Fourth Transitory Article of the Decree reforming and adding several provisions of Articles 6, 7, 27, 28,
73, 78, 94 and 105 of the Constitution on telecommunications matters, published in the Official Journal of theFederation on June 11, 2013;

II.

When the request is submitted, such agents and concessionaires shall include the compliance assessment referred to in
section III of the foregoing Article, and provide the information determined by the Federal Telecommunication Instituteregarding the services they intend to provide;

III. The Federal Telecommunications Institute will resolve on the origin of the request within sixty calendar days following
its submission, based on the general guidelines issued for this purpose and will determine the applicable considerations.
Once the period indicated in the preceding paragraph has elapsed without the Institute having resolved the relevant
request, it will be understood as being negative, and
IV. In the process for the request, the Federal Telecommunications Institute shall ensure the granting of the authorization
does not create adverse effects for competition and free concurrency.
It will be understood as generative adverse effects for competition and free concurrency, among other factors considered by
the Federal Telecommunications Institute, when:a. Such authorization may have as an effect to increase participation in the relevant sector of the prevailing economic agent orof the economic interest group to which concessionaires whose concession titles contain a prohibition or restriction to provide
certain services belong, regarding the participation determined by the Federal Telecommunications Institute in the resolution bymeans of which it was declared prevailing economic agent in the relevant sector.
b. The authorization of additional services has the effect of conferring substantial power in the relevant market to any of theconcessionaires or members of the prevailing economic agent or the concessionaires whose concession titles contain a prohibition
or restriction to provide certain services in the relevant sector.
The provisions of this Article will be applicable in case the respective agents and commissionaires choose to pass to the single
concession and this will be independent of the applicable economic sanctions in accordance with the Federal Telecommunications
and Broadcasting Law.
TWELFTH. The prevailing economic agent in the telecommunications sector may choose at any time the regime indicated in
Article 276 of the Federal Telecommunications and Broadcasting Law or to exercise the right set forth in this Article.

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The prevailing economic agent in the telecommunications sector may submit to the Federal Telecommunications Institute aplan based on an actual and specific situation regarding given people, which includes, as applicable, the structural separation, thefull or partial unincorporation of assets, rights, partnership interests or shares or any combination of these options in order toreduce his/her national participation below fifty percent of the telecommunications sector referred to in section III of the Eighth
Transitory Article of the Decree reforming and adding several provisions of Articles 6, 7, 27, 28, 73, 78, 94 and 105 of theConstitution of the United Mexican States, on telecommunications matters, published in the Official Journal of the Federation on
June 11, 2013, in accordance with the variables and measurement parameters used by the Federal Telecommunications Institute in
the respective declaration of preponderance and provided that with the implementation of such plan conditions of effective
competition are generated in the markets that integrate such sector in accordance with the Federal Law on Economic Competition.
If the prevailing economic agent uses this option, the following shall be observed:
I. When the plan referred to in the foregoing paragraph is submitted, the prevailing economic agent shall state in writing thatthe/she adheres to the provisions of this Article and acceptance of its terms and conditions; likewise, the necessary informationand documentation that allows the Federal Telecommunications Institute to know and analyze the proposed plan shall be
included;
II. In case the Federal Telecommunications Institute considers the submitted information is insufficient, within the term of 20
business days following the submission of the plan, the prevailing economic agent will be instructed to submit the missing
information within 20 business days. In case the prevailing economic agent does not fulfill this within the indicated period or if
the Institute considers the submitted documentation or information is not sufficient or suitable to analyze the proposed plan, theagent may be instructed for a second time in the terms indicated in advance and if this last instruction is not fulfilled, the plan will
be deemed as not submitted, notwithstanding that the economic agent may submit a new plan proposal in terms of this Article;
III. Having addressed the instructions in the formulated terms, the Federal Telecommunications Institute will analyze,
evaluate and, if applicable, approve the proposed plan within one hundred twenty calendar days. If the Institute deems it necessary,such period may be extended for up to two occasions and for up to ninety calendar days each.
To approve such plan, the Federal Telecommunications Institute shall determine that it effectively reduces the national
participation of the prevailing economic agent below fifty percent in the telecommunications sector referred to in section III of theEighth Transitory Article of the aforementioned Decree, that it generates effective competition conditions in the markets that
integrate that sector in terms of the Federal Law on Economic Competition and that its purpose is no to affect or reduce theexisting social coverage.
The result of the plan shall be that participation in the sector where the prevailing agent is reduced is transferred to another orother economic agents that are different and independent of the prevailing economic agent. When the plan is approved, theFederal Telecommunications Institute shall ensure the effective separation and independence of those agents and shall set forth
the necessary terms and conditions for this situation to be duly protected;
IV. In case the Federal Telecommunications Institute approves the plan, the prevailing economic agent in thetelecommunications sector will have a period of up to ten business days to state acceptance of the plan and express consent
regarding the fees derived from applying subsections a) and b) of the second paragraph of Article 131 of the Federal

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
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Telecommunications and Broadcasting Law, and sections VI to VIII of this Article.
When the prevailing economic agent accepts the plan, it may not be modified and shall be executed in its terms, and said
agent cannot exercise once again the benefit granted in this Article and notwithstanding that he/she may choose the provisions ofArticle 276 of the Federal Telecommunications and Broadcasting Law;
V. The plan shall be executed during the 365 calendar days subsequent to its being accepted in terms of section IV. Economic
agents involved in the plan shall report with the regularity established by the Federal Telecommunications Institute on the process
of execution of the plan. In case the prevailing economic agent accredits that lack of fulfillment of the plan within the
aforementioned period is due to causes not imputable to him/her, he/she may request the Federal Telecommunications Institute an
extension, which may be granted for a maximum term of 120 calendar days, only one single time and provided that such causes
are duly justified;
VI. From the date on which the prevailing economic agent in the telecommunications sector has accepted the plan and during
the period referred to in the foregoing section, the reciprocal traffic compensation agreements referred to in the first paragraph of
Article 131 of the Federal Telecommunications and Broadcasting Law will be provisionally applied among the prevailing
economic agent in the telecommunications sector and the other concessionaires, and the fees derived from applying subsections a)
and b) of the second paragraph of said Article will be suspended among them;VII. The Federal Telecommunications Institute will certify that the plan has been effectively executed within the period
indicated in section V of this Article. For such purpose, within 5 business days following the end of the execution period or, if
appropriate, at the end of the corresponding extension, the Federal Telecommunications Institute shall start the tests that
demonstrate its execution generated effective competition conditions in the markets integrating the telecommunications sector, in
accordance with the Federal Law on Economic Competition.
Once the certification referred to in the foregoing paragraph, the traffic compensation agreements referred to in the firstparagraph of Article 131 of the aforementioned Law will be generally applied for all concessionaires;
VIII. If the plan is not executed within the period referred to in section V or, otherwise, at the end of the corresponding
extension, or the Federal Communications Institute denies the certification referred to in the foregoing section or determines there
was not full compliance with said plan under the approved terms, the reciprocal traffic compensation agreements will become
invalid and the suspension of fees referred to in subsections a) and b) of Article 131 of the Federal Communications andBroadcasting Law, between the prevailing economic agent in the telecommunications sector and the other concessionaires, and its
application will have a retroactive effect to the date on which the suspension started, with such agent having to return to the otherconcessionaires the amounts corresponding to the application of the aforementioned fees. Under this assumption, theaforementioned concessionaires may compensate the amounts to be returned against other amounts owed to the prevailing
economic agent;
IX. The Federal Telecommunications Institute will authorize the economic agent who proposed the plan and the resulting
economic agents or those who are part of such plan the provision of additional services to those that are the subject matter of theconcession or their passing to the single concession model, from the date on which it is certified that the plan has been effectively
executed and provided that with the execution of such plan effective competition conditions are generated in the markets
integrating the telecommunications sector in accordance with the Federal Law on Economic Competition;

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
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X. Once the Federal Telecommunications Institute has certified the approved plan has been effectively excepted the following
will expire:a. The resolutions by means of which it has determined the economic agent is prevailing in the telecommunications sector, as
well as the asymmetric measures that have been imposed in terms of the provisions of section III and IV of the Eighth Article of
the aforementioned Decree, andb. The resolutions by means of which it has determined the economic agent has substantial power in a market, as well as the
specific measured that have been imposed.
THIRTEENTH. The Federal Executive Branch, through the Secretariat of Communications and Transportation, will carryout actions tending to install the shared telecommunications public network referred to in the Sixteenth Transitory Article of theDecree reforming and adding several provisions of Articles 6, 7, 27, 28, 73, 78, 94 and 105 of the Constitution of the United
Mexican States, on telecommunications matters, published in the Official Journal of the Federation on June 11, 2013.
In case the Federal Executive Branch requires frequency bands of the spectrum released by the transition to Digital Terrestrial
Television (700 MHz band) to make grow and strengthen the shared networks indicated in the foregoing paragraph, the Federal
Telecommunications Institute will directly grant them, provided that such network is kept under the control of a public entity oragency or under a public-private association regime.
FOURTEENTH. The Federal Telecommunications Institute shall implement a professional service system within one
hundred eighty calendar days following the effective date of this Decree, which shall contain, among other aspects, therecognition of the rights of the Federal Telecommunications Commission workers who are certified as professional service
workers.
FIFTEENTH. The Federal Telecommunications Institute shall install its Consultative Board within one hundred eighty
calendar days following the effective date of this Decree.
SIXTEENTH. The Secretariat of Communications and Transportation shall set forth the mechanisms to carry out thecoordination provided for in Article 9, section V of the Federal Telecommunications and Broadcasting Law, within one hundred
eighty calendar days following the effective date of this Decree.
SEVENTEENTH. Broadcasting permits valid or in renewal process upon the effective date of this Decree shall pass to thecorresponding concession regime within the year following the effective date of the Federal Telecommunications andBroadcasting Law, under the terms set forth by the Institute. Permits that have been granted to the Branches of the Union, states,
Government bodies of the Federal District, municipalities, autonomous constitutional bodies and public higher education
institutions shall pass to the public use concession regime, while the rest of granted permits shall pass to the corporate use
concession regime.
In order to pass to the corresponding concession regime, licensees shall submit a request to the Federal Telecommunications
Institute, which will resolve as appropriate within a period of ninety business days.
While the transaction is performed, such permits will be ruled by the provisions of the Federal Telecommunications andBroadcasting Law for concessions of public or corporate use, as appropriate.

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If this Article is not complied with, the validity of the permits will terminate.
EIGHTEENTH. The Federal Telecommunications Institute shall issue, within one hundred eight days following the effective
date of the Federal Telecommunications and Broadcasting Law, the work schedule to reorganize the radioelectric spectrum toradio and television stations referred to in subsection b) of section V of the Seventeenth Transitory Article of the Decree
reforming and adding several provisions of Articles 6, 7, 27, 28, 73, 78, 94 and 105 of the Constitution of the United Mexican
States, on telecommunications matters, published in the Official Journal of the Federation on June 11, 2013. In determining thework schedule, the Institute will try to ensure the development of the relevant market of radio, the migration of the greatest
possible number of stations of concessionaires from the AM to FM band, the strengthening of competition conditions andcontinuity in the provision of services.
NINETEENTH. Digital Terrestrial transition will end on December 31, 2015.
The Federal Executive Branch, through the Secretariat of Communications and Transportation, will implement the programs
and actions related to the policy for transition to digital terrestrial television, for the delivery or distribution of receivers or
decoders referred to in the third paragraph of the Fifth Transitory Article of the Decree reforming and adding several provisions ofArticles 6, 7, 27, 28, 73, 78, 94 and 105 of the Constitution of the United Mexican States, on telecommunications matters,
published in the Official Journal of the Federation on June 11, 2013.
The Federal Telecommunications Institute shall conclude the transmission of analog signals for broadcast television in thewhole country, at a maximum on December 31, 2015, once a penetration level of ninety percent of low income households
defined by the Secretariat of Social Development, with receivers or decoders suitable to receive digital signals of broadcast
television.
For this, the Federal Telecommunications Institute shall conclude the analog signals for broadcast television on an anticipatedbasis by December 31, 2015, per coverage area of such signals, once the level of penetration referred to in the foregoingparagraph is reached, in the corresponding area.
The Secretariat of Communications and Transportation and the Federal Telecommunications Institute will undertake
dissemination campaigns for the delivery or distribution of equipment and concluding the transmission of analog television
signals, respectively.
Broadcast television concessionaires and licensees will be obliged to make all investments and installations necessary to pass
to digital terrestrial television at a maximum by December 31, 2015. The Federal Telecommunications Institute will monitor duly
compliance with the aforementioned obligation.
Licensees or concessionaires of public or corporate use, including community and indigenous ones, who provide thebroadcasting service and are not in conditions to start digital transmission as of December 31, 2015, shall, in advance to that date,
notify the Federal Telecommunications Institute, under the terms indicated in Article 157 of the Federal Telecommunications andBroadcasting Law, in order to be authorized to temporarily suspend their transmissions or, if appropriate, to reduce their effective
radiated power, so the continuity program referred to in the following paragraph of this Article is applicable to them. In no case
may the periods authorized by the Institute exceed December 31, 2016.
Added paragraph DOF 12-18-2015

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
General Secretariat
Secretariat of Parliamentary Services

Latest Reform DOF 12-18-2015

In case towards the anticipated conclusion dates of analog signals for broadcast television per coverage area or if byDecember 31, 2015, current broadcast television stations with an effective radiated power below or equal to 1 kW for VHF
channels and 10 kW for UHF channels are not transmitting digital terrestrial television and/or the level of penetration indicated in
the third and fourth paragraphs of this Article have not been reached, either in a region, locality or the whole country, the Federal
Telecommunications Institute shall establish a program for the population to continue receiving this public service of generalinterest in the respective areas, while digital transmissions are started and/or the levels of penetration indicated in this Article arereached. Stations holders shall make the necessary investments and installations in accordance with the periods planned in the
program. In no case may the actions resulting from this program exceed December 31, 2016.
Reformed paragraph DOF 12-18-2015
Legal, administrative or regulatory provisions are abrogated in aspects that oppose to this transitory Article.
TWENTIETH. The Federal Telecommunications Institute will apply Article 131 of the Federal Telecommunications andBroadcasting Law and any others that are applicable regarding interconnection matters in its terms, and will ensure duly
compliance with the obligations established in such precepts, which will be enforceable notwithstanding and independently of thefact that on the effective date of the Law, it may already have determined the existence of a prevailing economic agent andimposed the necessary measures to avoid affecting competition and free concurrency according to section III of the Eighth
Transitory Article of the Decree reforming and adding several provisions of Articles 6, 7, 27, 28, 73, 78, 94 and 105 of theConstitution of the United Mexican States, on telecommunications matters, published in the Official Journal of the Federation on
June 11, 2013.
For the purposes of the provisions of subsection b) of Article 131 of the Federal Telecommunications and Broadcasting Law
and, while concessionaires referred to in this subsection do not agree the corresponding interconnection fees or, if applicable, theInstitute does not resolve any dispute regarding such fees, those currently applied will continue in force, except in the case of theeconomic agent referred to in the second paragraph of Article 131 of the aforementioned Law, to whom subsection a) of the same
Article will be applied.
TWENTY-FIRST. For addressing, promoting and supervising the rights or users indicated in the Federal
Telecommunications and Broadcasting Law, and in the Federal Consumer Protection Law, PROFECO shall create a specialized
area for this, in accordance with the budged approved by the Chamber of Deputies for such purpose.
TWENTY-SECOND. The Federal Telecommunications Institute shall issue the general administrative provisions referred toin Title Eight of the Federal Telecommunications and Broadcasting Law, within a maximum period of ninety calendar days
counted from the effective date of this Decree.
TWENTY-THIRD. The budgetary impact generated due to the entry into force of this Decree on personal service matters, aswell as the establishment of new attributions and activities under the responsibility of the Federal Telecommunications Institutewill be covered by being charged to the budget annually approved by the Chamber of Deputies for said body.
TWENTY-FOURTH. In accordance with the provisions of the Fifteenth, Sixteenth and Seventeenth Transitory Articles of
the Decree reforming and adding several provisions of Articles 6, 7, 27, 28, 73, 78, 94 and 105 of the Constitution of the United
Mexican Stated, on telecommunications matters, published in the Official Journal of the Federation on June 11, 2013, the last

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Latest Reform DOF 12-18-2015

paragraph of Article 14 of the Federal Revenue Law for Fiscal Year 2014 is abrogated.
TWENTY-FIFTH. The provisions of section V of Article 118 of the Federal Telecommunications and Broadcasting Law
will enter into force on January 1, 2015, so from that date concessionaires of public telecommunications networks who provide
fixed or mobile services, or both, may not make national toll charges to their users for calls made to any national destination.
Notwithstanding the foregoing, concessionaires shall consolidate all existing local service areas in the country in accordancewith the guidelines issued by the Federal Telecommunications Institute for such purpose. Each concessionaire shall assume thecosts originated due to that consolidation.
Likewise, the Federal Telecommunications Institute, within one hundred eighty days following the effective date of thisDecree, shall define the interconnection points to the public telecommunications network of the prevailing economic agent or the
economic agent with substantial power.
Administrative resolutions that may have been issued will become invalid in the aspects they oppose to the provisions of thistransitory Article.
Concessionaires will keep the numbering that has been assigned to them in order to use it for smart network services in theirmodalities of reverse charge and other special services, such as 900 numbers.
TWENTY-SIXTH. The Federal Executive Branch shall send to the Senate of the Republic or, if appropriate, to thePermanent Commission, the appointment proposal for the Chairman of the Public Broadcasting System of the Mexican State,
within thirty calendar days following the effective date of this Decree.
The Senate or, if appropriate, the Permanent Commission, shall appoint the Chairman of the System within thirty calendar
days following that on which the proposal is received from the Federal Executive Branch.
TWENTY-SEVENTH. The representatives of the State Secretariats that form the Governing Board of the Public System of
the Mexican State shall be appointed within sixty calendar days following the effective date of this Decree.
TWENTY-EIGHTH. The Appointment of the members of the Citizen Council of the Public Broadcasting System of the
Mexican State shall be carried out within sixty calendar days following the effective date of this Decree.
TWENTY-NINTH. The Chairman of the Public Broadcasting System of the Mexican State will submit to the Governing
Board, for approval, the draft Organic Statute, within ninety calendar days following the appointment.
THIRTIETH. From the entering into force of this Decree, the decentralized body called Audiovisual Media Promoting Body
becomes the Public Broadcasting System of the Mexican State, which will have the human, budgetary, financial and material
resources of the aforementioned body.
While the Organic Statute of the Public Broadcasting System of the Mexican State is issued, the Organic Statute of the
Audiovisual Media Promoting Body will continue being applied in aspects that do not oppose to the Law of the Public
Broadcasting System of the Mexican State.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
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Labor rights of the personnel of the Audiovisual Media Promoting Body will be respected in accordance with the Law.
THIRTY-FIRST. Human, budgetary, financial and material resources of the Audiovisual Media Promoting Body will
become part of the Public Broadcasting System of the Mexican State once its Chairman is appointed, without detriment to thelabor rights of its workers.
THIRTY-SECOND. The Secretariat of the Interior shall coordinate with the relevant authorities to exercise the attributions
on monitoring set forth in the Federal Telecommunications and Broadcasting Law.
The Chamber of Deputies shall allocate the necessary resources to ensure appropriate exercise of the attributions referred to inthis transitory Article.
THIRTY-THIRD. The Federal Telecommunications Institute will issue the guidelines referred to in section III of Article 158of the Federal Telecommunications and Broadcasting Law, within a period not exceeding 180 calendar days counting from the
day following the effective date of this Decree.
THIRTY-FOURTH. The Chamber of Deputies shall allocate to the Public Broadcasting System of the Mexican Stateeconomic resources in accordance with its purposes and functions, for which the following shall be considered:I.

Its growth plans;II.

Its operational expenditure, andIII. Its financial balance.
THIRTY-FIFTH. Except for the provisions in the Twentieth Transitory Article, by means of which the Federal
Telecommunications Institute is bound to apply Article 131 of the Federal Telecommunications and Broadcasting Law that isissued by virtue of this Decree and any others that are applicable on interconnection matters in its terms, the administrative
resolutions issued by the Federal Telecommunications Institute prior to the effective date of this Decree on preponderance matterswill fully continue in force.
THIRTY-SIXTH. The Federal Telecommunications Institute, within 180 days after the effective date of this Decree, shallmake the corresponding studies to analyze if it is necessary to establish mechanisms that foster and encourage concessionaires toinclude a program schedule targeted to the child audience, in which culture, sports, environment protection, respect for humanrights, the superior interest of childhood, gender equality and non-discrimination are promoted.
THIRTY-SEVENTH. For the purposes of the authorities in charge of procurement of justice referred to in section I of
Article 190 of the Federal Telecommunications and Broadcasting Law, the provisions of the Federal Telecommunications Law on
real-time geographical localization matters will continue being valid until the National Code for Criminal Produces enters into
force.
THIRTY-EIGHTH. The Federal Telecommunications Institute shall issue, within sixty business days following the effective
date of the Federal Telecommunications and Broadcasting Law, the necessary administrative rules that eliminate requirements

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that may delay or impede telephone number portability and, if applicable, promote to do it through electronic media.
The rules referred to in the foregoing paragraph shall ensure effective portability and that it is carried out within a period notexceeding 24 hours counting from the request made by the holder of the respective number.
To make such change, it will only be necessary to produce the identification of the holder and the user's will statement. In thecase of legal entities, the process shall be undertaken by the legal representative of proxy who accredits his/her personality interms of the applicable regulations.
THIRTY-NINTH. For the purposes of the provisions of Article 264 of the Federal Telecommunications and Broadcasting
Law, the Federal Telecommunications Institute will start, notwithstanding the provisions of the Ninth Transitory Article of thisDecree, within thirty calendar days following its effective date, the relevant investigation procedures in terms of the Federal Law
on Economic Competition, in order to determine the existence of economic agents with substantial power in any of the relevantmarkets of the telecommunications and broadcasting sectors, which must include the associated national audio and video market
through public telecommunications networks and, if applicable, impose the corresponding measures.
FORTIETH. The prevailing economic agent in the telecommunications sector or the agent with substantial power in therelevant corresponding market will be obliged to comply with the provisions of Articles 138, section VIII, 208 and sections V and
VI of Article 267 of the Federal Telecommunications and Broadcasting Law, from its effective date.
FORTY-FIRST. Public higher education institutions that on the effective date of this Decree have the broadcasting media
referred to in Article 67 section II and 76 section II of the Federal Telecommunications and Broadcasting Law will not receive
any additional budget for such purpose.
FORTY-SECOND. For the concession to install, operate and use a public telecommunications network that, in terms of theFifteenth Transitory Article of the Decree reforming and adding several provisions of Articles 6, 7, 27, 28, 73, 78, 94 and 105 of
the Constitution of the United Mexican States, on telecommunications matters, must be assigned by Comisión Federal deElectricidad (Federal Electricity Commission) to Telecomunicaciones de México (Telecommunications of Mexico), theprovisions of Articles 140 and 144 of the Federal Telecommunications and Broadcasting Law will not be applicable exclusively
regarding agreements in force on the date of publication of this Decree, which have been entered between Comisión Federal deElectricidad and individuals or legal entities that, in accordance with that same Law, must be considered as final users.
Such agreements will be assigned by Comisión Federal de Electricidad to Telecomunicaciones de México, together with therespective concession title. Telecomunicaciones de México will assign the aforementioned agreements in favor of otherconcessionaires authorized to provide services to final users, within six months following the date on which they are assigned.
In case of a technical, legal or economic impediment for Telecomunicaciones de México to be able to assign those agreements,
they will continue being in force as a maximum until the date indicated in them for termination, without any possibility to be
renewed or extended for new periods.
FORTY-THIRD. Within a period not exceeding 36 months from the effective date of this Decree, the signals of commercial
use concessionaires who transmit broadcast television and cover more than fifty percent of the national territory shall have the61 of 63

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Mexican sign language or occult subtitles in the national language, in the programs they transmit from 06:00 to 24:00 hours,
excluding advertisement and other cases established by the Federal Telecommunications Institute, taking into consideration thebest international practice. Federal public entities that are public use broadcast television concessionaires will be subject to thesame obligation.
FORTY-FOURTH. In relation to the obligations set forth on accessibility for disabled people referred to in the Federal
Telecommunications and Broadcasting Law for ombudsmen, concessionaires will have a period of up to ninety calendar days
from the effective date of this Decree to start the relevant adaptations and mechanisms.
FORTY-FIFTH. The restriction to access the sharing of infrastructure belonging to the prevailing economic agent inbroadcasting, included in section VII of Article 266 of the Federal Telecommunications and Broadcasting Law, will not beapplicable to the concessionaire or concessionaires resulting from the bidding of the new digital open televisions chains referred
to in section II of the Eighth Transitory Article of the Decree reforming and adding several provisions of Articles 6, 7, 27, 28, 73,
78, 94 and 105 of the Constitution of the United Mexican States on telecommunications matters.
Mexico, Federal District, July 08, 2014.- Senator Raúl Cervantes Andrade, Chairman.- Deputy José González Morfín,
Chairman.- Senator María Elena Barrera Tapia, Secretary.- Deputy Angelina Carreño Mijares, Secretary.- Signatures."
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States, and for duly
publication and observance, I hereby issue this Decree in the Residency of the Federal Executive Branch, in Mexico City, Federal
District, on the fourteenth day of the month of July, two thousand fourteen.- Enrique Peña Nieto.- Signature.- The Secretary of
the Interior, Miguel Ángel Osorio Chong.- Signature.

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FEDERAL LAW ON METROLOGY AND STANDARDIZATIONCHAMBER OF DEPUTIES OF THE CONGRESS OF THE UNION
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DECREE reforming the Nineteenth Transitory Article of the Decree issuing the Federal Telecommunications andBroadcasting Law and the Law of the Public Broadcasting System of the Mexican State; and reforming, adding andabrogating several provisions on telecommunications and broadcasting matters, published on July 14, 2014.
Published in the Official Journal of the Federation on December 18, 2015
SINGLE ARTICLE.- A seventh paragraph is added, subsequent paragraphs are moved ahead, and a reform is made to thecurrent seventh paragraph of the Nineteenth Transitory Article of the "DECREE ISSUING THE FEDERALTELECOMMUNICATIONS AND BROADCASTING LAW AND THE LAW OF THE PUBLIC BROADCASTING SYSTEM
OF THE MEXICAN STATE; AND REFORMING, ADDING AND ABROGATING SEVERAL PROVISIONS ON
TELECOMMUNICATIONS AND BROADCASTING MATTERS" PUBLISHED IN THE OFFICIAL JOURNAL OF THE
FEDERATION ON JULY 14, 2014, to be as follows:……….
Transitory Articles
First. This Decree will enter into force the day after its publication in the Official Journal of the Federation.
Second. With the entry into force of this Decree, all legal, regulatory and administrative provisions opposing to it areabrogated.
Third. From the beginning of pre-campaigns and until the election day, the Federal Government and the governments offederative entities and municipalities will suspend the distribution or substitution of receptors or decoders, as well as the programsfor the delivery of digital televisions carried out in those federative entities where electoral processes take place during 2016. The
National Electoral Institute will verify compliance with this provision and will apply, if appropriate, the relevant sanctions. The
delivery, distribution or substitution of receptors, decoders or digital televisions contravening the provisions of this Article will besanctioned in terms of the General Law on Electoral Institutions and Procedures.
Mexico, Federal District, December 9, 2015.- Senator Roberto Gil Zuarth, Chairman.- Deputy José de Jesús Zambrano
Grijalva, Chairman.- Senator Rosa Adriana Díaz Lizama, Secretary.- Deputy Alejandra Noemí Reynoso Sánchez, Secretary.Signatures."
In compliance with the provisions of section I of Article 89 of the Constitution of the United Mexican States, and for duly
publication and observance, I hereby issue this Decree in the Residency of the Federal Executive Branch, in Mexico City, Federal
District, on the sixteenth day of the month of December, two thousand fifteen.- Enrique Peña Nieto.- Signature.- The Secretaryof the Interior, Miguel Ángel Osorio Chong.- Signature.

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