KENYA STANDARD  DKS 525:2021 
ICS 59.080  
Second   Edition  
  
 © KEBS 2021  
 Ladies’ briefs — Specification     
 
 
 
 
 
ii © KEBS 2022 – All rights reserved  
 TECHNICAL COMMITTEE REPRESENTATION  
The following organizations were represented on the Technical Committee:  
Moi university –Department of Industrial and Textile Engineering  
Ministry of Industrialization and Trade  
Technical University of Kenya(TUK)  
MumsbyKare Ltd  
Intertek  
Rivatex Ltd  
SpinKnits Ltd  
Ministry of Defence -Reaseacrch & Development  
Spinknit Ltd Nakuru  
Kenya Industrial and Research Institute  
Kontoor Brands Inc  Ltd 
Egerton University - Department of Applied Community Development Studies  
Kenya Bureau of Standards — Secretariat  
REVISION OF KENYA STANDARDS  
In order to keep abreast of progress in industry, Kenya Standards shall be regularly reviewed.  Suggestions for 
improvements to published standards, addressed to the Managing Director, Kenya Bureau of Standards, are 
welcome.  
© Kenya Bureau of Standards, 2021 
Copyright. Users are reminded that by virtue of Section 25 of the Copyright Act, Cap. 130 of 2001 of  the Laws 
of Kenya, copyright subsists in all Kenya Standards and except as provided under Section 25 of this Act , no 
Kenya Standard produced by Kenya Bureau of Standards may be reproduced, stored in a retrieval system in 
any form or transmitted by any means without prior permission in writing from the Managing Director.   KENYA STANDARD  DKS 525:2022 
ICS 59.080  
Second   Edition  
 
© KEBS 2021  – All rights reserved  iii 
  Ladies’ briefs — Specification     
Kenya Bureau of Standards, Popo Road, Off Mombasa Road,  
P.O. Box 54974 - 00200,  Nairobi, Kenya  
 +254 020 6948000, + 254 722202137, + 254 734600471  
 info@kebs.org  
 @KEBS_ke  
 Kenya  bureau of standards (kebs)  
 
iv © KEBS 2022 – All rights reserved  
 Foreword  
This Kenya Standard was prepared by the Technical Committee on Ready Made Garments under the guidance 
of the Standards Projects Committee, and it is in accordance with the procedures of Kenya Bureau of Standards  
 
A number of manufacturers are engaged in fabricating knitted ladies’ briefs fro m knitted  and disposable fabrics 
and this standard is intended to help such manufacturers in producing quality goods and safeguarding th e 
interests of the consumers in terms of health and quality products.  
 
This second edition  cancels and replaces First edition of KS 525:1984  which has been technically revised to 
include disposable briefs.  
 
 
During the preparation of this standard, reference was made to the following publication:  
  
KS 08 -495 Specification for gent’s knitted briefs  
. 
GB/T 28005 -2011 Paper underpants  
 
Acknowledgement is hereby made for the assistance derived from this source.  
 
  
 DKS 525: 2022 
© KEBS 2021  – All rights reserved  v 
  DKS 525: 2022   
 
© KEBS 2021– All rights reserved   
 Ladies’ briefs  Specification  
 
1.SCOPE  
 
This Kenya Standard prescribes the requirements  and test methods for all types of briefs for girls and women. 
This is applicable to knitted and disposable briefs . 
 
2.Normative references  
 
The following referenced documents referred to in the text in such a way that some or all of their content 
constitutes requirements of this document. For dated references, only the edition cited applies. For undated 
references, the latest edition of the referenced document (including any amendments) applies . 
 
KS ISO 8559 -1, Size designation of clothes — Anthropometric definitions for body measurement , 
KS ISO  8559 -2 Size designation of clothes _Primary and secondary dimension  
KS ISO 14362 -3. Textiles — Methods for determination of certain aromatic amines derived from azo colora nts- 
Part 3: Detection  of the use of certain azo colorants, which may release 4 -aminoazobenzene  
KS EAS 220 :2018 Knitted  polyester fabric  
KS EAS 222 :2018 Knitted polyester -cellulosic blended fabric - Specification   
KS EAS 227  :2018 Knitted  cotton fabric - Specification  
KS ISO 9073 -15 Textiles - Test methods for nonwovens  Part 15:  Determination of air permeability.  
KS ISO 1833  Textile - Quantitative chemical analysis  
KS ISO 9073 -18 
Ks iso 1833 -11 Textiles — Quantitative chemical analysis — Part 11: Mixtures of certain cellulose fibres with 
certain other fibres (method using sulfuric acid)  
KS ISO 3071  Textiles - Determination of pH of aqueous extract  
KS ISO 3758.  KS ISO 3758:2012Textiles -care labelling code using symbols  
 
 
3.Terms and Definit ions 
 
For the purpose of this standard, th e definitions given below and the definitions given in  KS ISO 8559 -1, Size 
designation of clothes — Anthropometric definitions for body measurement , KS ISO  8559 -2 Size 
designation of clothes _ Primary and secondary dimension shall apply  
 
3.1 Briefs -  are a type of short, form -fitting underwear, as opposed to styles where m aterial extends down the 
thighs and are worn by women . 
 
4.       Requirements   
4.1     General Requirements  
 
4.1.1  Manufacture  
 
4.1.1.1  The briefs shall be supplied with an elastic braid which shall be accommodated by folding and/or 
stitching the knitted fabric at the waist band.  
4.1.1.2  Elastic Flat Braid  — The elastic flat braids used shall comply with the requiremen ts in KS 529, 
Specification for elastic flat braid.  
 
4.1.2   Freedom from Defects  
 
4.1.2.1 The briefs shall be free from any manufacturing defects such as darning,holes,lumps, oil,stains  mends, 
ladders, dropped stitches, holes, cuts, missing stitches at th e stitched parts and any other appearance 
defects  
 
  
© KEBS 2021  – All rights reserved  iii 
  4.1.3  Decomposable aromatic amine dyes  
The Decomposable aromatic amine dyes shall not be more than 20mg/kg when determined  in accordance to 
KS ISO 14362 -3.  
4.1.4  Fabrics  
4.1.4.1 The knitted fabrics from which the briefs are manufactured shall comply with the requirements of the 
KS EAS 220, KS EAS 222 and KS EAS 227 for knitted  fabrics  
 
4.4 Seams and Stitches  
The number of stitches shall be not less than 3.5 per centimetre in the c ases where stitches are used.  
 
5.9 Specific Requirements  
 
The fabric properties of the disposable briefs shall be as specified in Table 1  
 
 
Table 1: Performance requirements for disposable briefs  
 
 
 
 
 
 
 
 
 
 
 
5.Packaging  
    The briefs shall be packed in a  suitable packaging material that can protect  them from dust, dirt and 
water.  
The following information in English  to appear in the sales package  
 
6.MARKING   
             The following information which shall be in English shall be in a  suitable cloth label securely attached to 
each  knitted brief at the inside near the waist band . For Disposable briefs the information shall be indicated 
in the sales  package  
  
i. The manufacturer’ s name and/or trade mark.  
ii. Hip girth in CM   
iii. Fibre composition of the material.  
iv. Care instructions as given in accordance with KS ISO 3758.  
v. The country of Origin  
 S/N Characteristic  
 Requirement  Test method  
i.  Air Permeability, l/cm2.s, min 0.015  KS ISO 9073 -15* 
ii.  Fiber composition  100% Cellulose  KS ISO 1833 -11 
iii.  Tensile  strength, kN/m, min  Cross direction  0.6 
iv.  Machine direction  0.6 
v.  pH 4-7.5 KS ISO 3071  
use differential pressure of 100 Pa across the specimen