DRAFT UGANDA STANDARD  
  DUS 1687 -9 
First  Edition  
2017 -mm-dd 
 
 
 Reference number  
DUS 1687 -9: 2017  
© UNBS 2017   
  
School Clothing  — Part 9: Briefs  
 DUS 1687 -9: 2017  
ii © UNBS 2017  – All rights reserved  
 Compliance with this standard does not; of itself confer immunity from legal obligations  
A Uganda Standard does not purport to include all necessary provisions of a contract. Users are 
responsible for its correct applica tion 
© UNBS 2017  
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written 
permission from U NBS.  
Requests for permission to reproduce this document should be addressed to  
The Executive Director  
Uganda National Bureau of Standards  
P.O. Box 6329  
Kampala  
Uganda  
Tel: +256 41 7 333 2 50/1/2 
Fax: +256 41 4 286 123  
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  DUS 1687 -9: 2017  
© UNBS 2017  – All rights reserved  iii 
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  iv 
Introduction  ................................ ................................ ................................ ................................ .........................  v 
1 Scope  ................................ ................................ ................................ ................................ ......................  7 
2 Normative references  ................................ ................................ ................................ ............................  7 
3 Definitions  ................................ ................................ ................................ ................................ ..............  7 
4 Requi rements  ................................ ................................ ................................ ................................ .........  8 
4.1 Outer material  ................................ ................................ ................................ ................................ ........  8 
4.2 Supplementary materials and components  ................................ ................................ ........................  8 
4.3 Style  ................................ ................................ ................................ ................................ ........................  8 
4.4 Size................................ ................................ ................................ ................................ ..........................  8 
4.5 Make  ................................ ................................ ................................ ................................ ........................  9 
4.5.1  Briefs ................................ ................................ ................................ ................................ .......................  9 
4.6 Stitches  ................................ ................................ ................................ ................................ ...................  9 
4.6.1  General  ................................ ................................ ................................ ................................ ...................  9 
4.6.2  Stitches  ................................ ................................ ................................ ................................ ...................  9 
4.6.3  Number of stitches  ................................ ................................ ................................ ................................  9 
4.7 Seams  ................................ ................................ ................................ ................................ .....................  9 
4.8 Stitching  ................................ ................................ ................................ ................................ ...............  10 
5 Packing, care -labelling, and marking  ................................ ................................ ................................  10 
6 Inspection and methods of test  ................................ ................................ ................................ .........  10 
6.1 Inspection  ................................ ................................ ................................ ................................ .............  10 
6.2 Knitted structure  ................................ ................................ ................................ ................................ .. 10 
6.3 Composition  ................................ ................................ ................................ ................................ .........  10 
6.4 Stitch length  ................................ ................................ ................................ ................................ .........  10 
6.5 Mass per unit area  ................................ ................................ ................................ ...............................  10 
6.6 Dimensional changes on washing  ................................ ................................ ................................ ..... 10 
6.7 Colour fastness to light  ................................ ................................ ................................ ......................  10 
6.8 Colour fastness to washing  ................................ ................................ ................................ ...............  10 
6.9 Colour fastness to perspiration  ................................ ................................ ................................ .........  10 
6.10  Bursting strength  ................................ ................................ ................................ ................................  10 
Annex  A  (normative)  Notes to purchasers  ................................ ................................ ................................ .. 12 
Annex  B (normative)  Additional information for the guidance of manufacturers  ................................ .... 13 
 DUS 1687 -9: 2017  
iv © UNBS 2017  – All rights reserved  
 Foreword  
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade , Industry and 
Cooperatives established under Cap 327 , of the Laws of Uganda , as amended .  UNBS is mandated to co -
ordinate the elaboration of standards and is  
(a) a member of International Organisation for Standardisation (ISO) and  
(b) a contact point for the WHO /FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT  Agreement  of the World Trade Organisation (WTO).  
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is estab lished to deliberate on standards in a given field or area and consists of key stakeholders 
including government, academia, consumer groups, private sector and other interested parties.  
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the 
general public for comments. The committee reviews the comments before recommending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council.  
The committee responsible for thi s document is Technical Committee UNBS/ TC 7 , Textile, Leather, Paper and Related 
Products, Subcommittee SC 1 , Textile and Related products.  
DUS 1687  consists of the following parts, under the general  title School Clothing :  
Part 1: General  requirements for  school clothing.  
Part 2: Blazers.  
Part 3: Trousers  and shorts.  
Part 4: Shirts.  
Part 5 : Dresses, tunics  and gyms.  
Part 6 : Girls'  slacks and  skirts.  
Part 7 : Knee -high stockings and  ankle socks.  
Part 8 : Jerseys and  cardigans.  
Part 9 : Briefs.  
Part 1 0: Tracksu its. 
Part 11 : Athletic  wear.  DUS 1687 -9: 2017  
© UNBS 2017  – All rights reserved  v 
 Introduction  
NOTE  
a) Requirements that must be specified by the purchaser are listed in annex A.  
b) Additional information for the guidance of manufacturers is given in annex B.  
c) Information regarding the verification of the quality of briefs produced to this part of DUS 1687 and a sampling 
plan that could be used to assess compliance of a lot of briefs with this part of DUS 1687are given  in annex B of 
DUS 1687 -1 
 DUS  1687 -9: 2017  
vii  
 School Clothing  — Part 9: Briefs  
1 Scope   
This part of DUS 1687 covers  the requirements for the materials for, and the sizes and make of school briefs 
for girls.  
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 d ocument. For dated references, only the edition cited applies. For undated 
references, the latest edition of the referenced document (including any amendments) applies.  
US ISO 105 -B02, Textiles — Tests for colour fastness — Part B02: Colour fastness to art ificial light: Xenon 
arc fading lamp test  
US ISO 105 -C10, Textiles — Tests for colour fastness — Part C10: Colour fastness to washing with soap or 
soap and soda  
US ISO 105 -E04, Textiles — Tests for colour fastness — Part E04: Colour fastness to perspiratio n 
US ISO 3801 , Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area  
US ISO 4915 , Textiles — Stitch types — Classification and terminology  
US ISO 5077 , Textiles — Determination of dimensional change in washing and drying  
US ISO 13938 -1, Textiles — Bursting properties of fabrics — Part 1: Hydraulic method for determination of 
bursting strength and bursting distension  
DUS 1687 -1, School clothing — Part 1: General requirements for school clothing  
3 Definitions  
For the purpo ses of this part of DUS 1687 the definitions given in DUS 1687 -1 and the following definition 
shall apply:  
sizedesignation  
the numerical value, in centimetres, of the hip girth, of the intended wearer  
Acceptable  
Acceptable to the authority administering  this standard,  or to the parties  concluding  the purchase  contract, as 
relevant   
viii © UNBS 2017  – All rights reserved  
 4 Requirements  
4.1 Outer material  
The fabric shall be cotton or nylon interlock fabric. A c otton fabric shall have a bursting strength, determined in 
accordance with 5.10, of at l east 900kPa. A nylon fabric shall comply with the requirements given in table  1. 
The colour(s) of the material(s) and components shall be an acceptable match to the required colour(s) as 
agreed upon between the purchaser and the supplier.  
(The note to sub clause 4.1 of DUS 1687 -1 shall also apply ) 
Table1—Nylon  interlock  fabric  requirements  
1 2 3 
Property  Requirements  Test Method 
subsection  
Knitted structure  
Composition ,% 
Polyamide  
Stitch length , mm  
Mass per unit area , g/m2, min  
Dimensional changes on wash ing, %, max  
Length  
Width  
Colour fastness to light , rating, min  
Colour fastness to washing , rating, min  
Change in colour  
Staining of transfer cloths  
Colour fastness to perspiration , rating, min . 
Change in colour  
Staining of transfer cloths  
Bursting strength , kPa, min  Plain interlock  
 
100 
3.0-3.2 
150 
 
5 
3 
5 
 
4 
4 
 
4 
4 
1000  5.2 
5.3 
 
5.4 
5.5 
5.6 
 
 
5.7 
5.8 
 
 
5.9 
 
 
5.10 
 
4.2 Supplementary  materials  and components  
The supplementary  materials  and components  shall comply  with the relevant  requirements  laid down  in DUS 
1687 -1. 
4.3 Style  
The briefs  shall have  a crutch  gusset,  leg cuffs,  and an elasticized  waist.  
4.4 Size 
The briefs  shall be supplied  in one (or more)  of the size designations  given  in column 1  of table  2, and their 
measurements,  determined  in accordance  with 6.1, shall be at least  equal  to the appropriate  minima  given  in 
columns  3-7.The  extensibility  of the  elasticized waist  shall be such  that the waist  can be readily  extended  to at  
© UNBS 2017  – All rights reserved  ix 
 least  equal  the maximum  hip girth of the intended  wearers,  e.g.in  the case of briefs  of size designation  70-75, 
at least  75 cm. 
Table  2—Size range  
1 2 3 4 5 6 7 
 
Size 
designation   
 
Size 
code  Garment measurements  
cm, min 
Hip Waist (relaxed)  Crutch  
length*  Crutch  
width  Outside leg 
length  
60-64 
65-69 
70-75 
76-81 
82-87 
88-93 SS 
S 
M 
L 
XL 
XXL 45 
50 
55 
60 
65 
70 36 
40 
44 
48 
52 
56 42 
44 
48 
52 
56 
60 5.5 
6 
6 
7.5 
7.5 
9 13 
14 
16 
18 
20 
22 
* Measured from the top of the front, down and over the crutch, and up to the top of the back. Measured across the 
narrowest part of the crutch.  
 
4.5 Make  
4.5.1  Briefs  
The briefs  should  have  a front panel  and back  panel  that are joined  by a double  gusset  at the crutch.  The 
gusset  of nylon  briefs  shall have  a lining  of cotton  inter lock. The waist  should  be ruched,  and the cuffs  should  
be bound  with outer material.  The width  of the binding  shall be in the range  10-20 mm. 
4.6 Stitches  
4.6.1  General  
All sewing  shall be in accordance  with US ISO 4915 . 
4.6.2  Stitches  
a) Side seams  and gusset:  Stitch  type 504. 
b) Leg cuffs  and waist:  Stitch type 402.  
4.6.3  Number  of stitches  
a) Stitch  type 504:  50±5 per  10cm. 
b) Stitch  type 402:  55±5 per  10cm. 
4.7 Seams  
a) Side and gusset:  Seam  type SSa.  
b) Leg cuff:  Seam  type BSb-1.  
x © UNBS 2017  – All rights reserved  
 4.8 Stitching  
Waist  hem:  Stitching  type EFb-1 
5 Packing, care -labelling, and marking  
The requirements of clause 5  of DUS 1687 -1 shall apply.  
6 Inspection  and methods  of test 
6.1 Inspection  
Visually examine and measure (except in the case of cru tch length)  each of the briefs in the sample for 
compliance with all the relevant requirements of sections 3 and 4 of this pa rt of DUS 1687, compliance with 
which is not assessed by the relevant tests given in 6.3 -6.10 (inclusive)  
6.2 Knitted structure  
Determine by visual examination.  
6.3 Composition  
Determine by microscopical examination and chemical analysis.  
6.4 Stitch length  
Use the relevant method given in US ISO 4915 . 
6.5 Mass per unit area  
Use US ISO 3801 . 
6.6 Dimensional  changes  on washing  
Use US ISO 5077 , procedure  C, drying  procedure  J. 
6.7 Colour  fastness  to light  
Use US ISO 105-B02.  
6.8 Colour  fastness  to washing  
Use US ISO 105 -C10.  
6.9 Colour  fastness  to perspiration  
Use US ISO 105-E04.  
6.10 Bursting  strength  
Use US ISO 13938 -1 
  
© UNBS 2017  – All rights reserved  xi 
  
 
 
 
 
 
 
 
  
xii © UNBS 2017  – All rights reserved  
 Annex  A  
(normative)  
 
Notes to purchasers  
The following  requirements  must  be specified  in tender  invitations  and in each  order  or contract:  
a) The type and colour of outer fabric (see 4.1);  
b) The size designation(s) required (see 4.4);  and 
c) Additional markings, if required (see 4.4 of DUS 1687 -1).  
© UNBS 2017  – All rights reserved  xiii 
 Annex  B 
(normative)  
 
Additional information for the guidance of manufacturers  
Type of fabric  Nominal yarn linear 
density, tex.  Machine gauge  
Cotton  
Polyamide  17 
78 20 
20 
  
xiv © UNBS 2017  – All rights reserved  
 Certification marking  
Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards 
(UNBS) Certification Mark shown in the figure below.  
The u se of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made 
thereunder. This mark can be used only by those licensed under the certification mark scheme operated by 
the Uganda National Bureau of Standards and in conjunction  with the relevant Uganda Standard. The 
presence of this mark on a product or in relation to a product is an assurance that the goods comply with the 
requirements of that standard under a system of supervision, control and testing in accordance with the 
certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are 
continually checked by UNBS for conformity to that standard.  
Further particulars of the terms and conditions of licensing may be obtained from the Director, Ugand a 
National Bureau of Standards.  
 
 DUS 1687 -9: 2017    
 
ICS nn.nnn.nn  
Price b ased on nn pages  
© UNBS 2017– All rights reserved