هيئة التقييس لدول مجلس التعاون لدول الخليج العربية  
GCC STANDARDIZATION ORGANIZATION ( GSO )  
 
 
 
 
 
 
 
 
 
 
Final  Draft  
 
 
GSO 05/ FDS  …../2015  
 
 
 
 
اللاكتوز 
LACTOSE   
 
 
 
 
 
 
 
 
 
Prepared By  
GSO Technical Committee for s tandards of food and agricultural  products  
 
 
This document is a draft GSO Standard circulated for comments. It is, therefore, subject to alteration and 
modification and may not be referred to as a GSO Standard until approved by GSO Board Of Directors  
 
 
 
 
 GSO STANDARD   GSO 05/DS …..   /2015 
 
 
  
Foreword  
GCC Standardization Organization (GSO) is a regional Organization which consists of the 
National Standards Bodies of GCC member States. One of GSO main functions is to issue 
Gulf Standards /Technical regulations through specialized technical committees (TCs).  
GSO through the technical pro gram of committee TC No (5) " Technical committee for 
standards of food and agriculture products " has prepared this Technical regulation. The Draft 
Technical regulation has been prepared by kingdom of  Saudi Arabia  . The draft Technical 
regulation  has been  prepared based on relevant ADMO, International and National foreign 
Standards and references.  
This Technical regulation has been approved by GSO Board of Directors in its meeting No.(), 
held on ()  .  
 
 
 
 
 
  GSO STANDARD   GSO 05/DS …..   /2015 
 
 
1 
 LACTOSE   
 
1. SCOPE AND FIELD OF APPLICATION  
 This Gulf standard is concerned with lactose . 
 
2. COMPLEMENTARY REFERENCES  
2.1 GSO 9  Labeling of prepackaged food s tuffs. 
2.2 GSO 20  METHODS  FOR THE DETERMINATION OF CONTAMINATING 
METALLIC ELEMENTS IN FOODSTUFFS  
2.3 GSO 21  Hygienic regulation for food plants and their personal.  
2.4 
GSO 134  METHODS OF TEST FOR SUGAR – PHYSICAL AND CHEMICAL 
METHODS  
2.5 GSO 148  Sugar  
2.6 GSO 150 -2 Expiration dates for food pr oducts - Part 2 : Voluntary expiration dates  
2.7 
GSO 168  REQUIREMENTS OF STORAGE FACIL ITIES FOR DRY AND 
CANNED FOODSTUFFS  
2.8 GSO CAC 193  General Standard for contaminants & toxins in food  
2.9 GSO 311  Methods of test for glucose.  
2.10 GSO ISO 1842  Fruit and vegetable products – Determination of PH  
2.11 GSO 839  FOOD PACKAGES - PART 1: GENERAL REQUIREMENTS  
 
3.  DEFINITIONS  
Lactose: ( milk sugar ) which is a natural constituent of milk normally obtained from 
whey. It may be an hydrous or contain one molecule of water of crystallization or be a 
mixture of both forms.  
 
4. REQUIREMENTS  
The following requirements shall be met in lactose.  
4.1 It shall be free from any foreign flavour and has a light sweet taste.  
4.2 It shall be free from dirt and other extraneous impurities.  
4.3 It shall be from insects and/or their part and/or rodents excreta.  GSO STANDARD   GSO 05/DS …..   /2015 
 
 
2 
 4.4 Anhydrous lactose shall contain not less than 99% m/m, on a dry basis.  
4.5 It shall not lose at drying at 120 oC for 16 hours more than 0.6% m/m.  
4.6 It shall has a sulphated ash not more than 0.3% m/m, on a dry basis.  
4.7 It shall has a pH of solution 10% m/m between 4.5 – 7.0. 
4.8 It shall be produced form raw material complying with relevant standard.  
4.9 Contaminant of elements shall not exceed the limits mentioned in item 2.8.  
4.10 The production shall be comply with good manufacturing practice according to 
standard mentioned in 2. 3. 
4.11 It should be free from food additives.  
 
5. SAMPLING  
Samples shall be taken according to standard mentioned in 2. 5. 
 
6.  PACKAGING, TRANSPORTAT ION AND STORAGE  
The following shall be met on packaging, transportation and storage  
6.1 PACKAGING  
The product shall be packed in hygienic and impermeable to moisture  
container and well sealed according to standard mentioned in item 2.1 0. 
6.2 TRANSPORTATION  
Transportation of the product shall be carried out in such a way that protects  
the packaging from mechanical damage and contamination.  
6.3 STORAGE  
The packages shall be kept in stores that clean, well -ventilated, and far away  
from sources of heat, moistur e, and contamination, according to standard  
mentioned in item 2. 7. 
 
7. LABELLING  
Without prejudice to provisions of standard mention in i tem 2.1 and 2. 6. 
 
 
 
 
 GSO STANDARD   GSO 05/DS …..   /2015 
 
 
3 
  
References :   
- Saudi Standards, Met rology and Quality Organization  (SASO -
2343 - lactose )