DRAFT FOR PUBLIC REVIEW  DRAFT UGANDA STANDARD  
  DUS 1700 -3 
First Edition  
2017 -mm-dd 
 
 
 Reference number  
DUS 1700 -3:2017  
© UNBS 2017   
 School wear fabrics — Part 3: Polyester and wool fabrics  
 DRAFT FOR PUBLIC REVIEWDUS 1700-3 : 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 application  
© 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 UNBS. 
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: +256 417 333 250 /1/2 
Fax: +256 414 286 123 
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  DRAFT FOR PUBLIC REVIEWDUS 1700-3: 2017 
© UNBS 2017  – All rights reserved  iii 
 Contents Page 
Foreword ............................................................................................................................................................ iv 
1 Scope  ................................ ................................ ................................................................ ...................... 5 
2 Normative references  ................................................................ ................................ ............................ 5 
3 Requirements  ................................ ................................ ................................................................ ......... 6 
3.1 General  ................................ ................................ ................................................................ ................... 6 
3.2 Fabric  ................................ ................................ ................................................................ ...................... 6 
3.3 Moth resistance  ................................ ................................ ................................ ..................................... 6 
3.4 Defects  ................................ ................................ ................................................................ .................... 6 
4 Packing, labelling, marking and inspection  ................................ ................................ ....................... 7 
Annex A  (Normative)   Note to purchasers ..................................................................................................... 8  
Annex B  (Informative)   Recommended end use ........................................................................................... 9  
Annex C  (Informative)   Guide to manufacturers and purchasers ............................................................. 10 
 DRAFT FOR PUBLIC REVIEWDUS 1700-3 : 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 established 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 this document is Technical Committee UNBS/TC 7 , [Textile, Leather , Paper and Related 
products], Subcommittee SC 1 , [Textile and Related products ]. 
DUS 1700 consists of the following parts, under the general title School Clothing:  
Part 1: Basic requirements 
Part 2: Blazer fabrics 
Part 3: Polyester and wool fabrics 
Part 4: Polyester and viscose fabrics 
Part 5: Polyester and cotton fabrics 
Part 6: Shirting and blouse fabrics 
Part 7: Fabrics containing textured yarns 
Part 8: Warp knitted fabrics 
 DRAFT FOR PUBLIC REVIEWDUS  1700-3: 2017  
v  
 School wear fabrics — Part 3: Polyester and wool fabrics  
1 Scope  
This part of DUS 1700 covers the requirements for polyester-and-wool fabrics suitable for use in the 
manufacture of school clothing 
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. 
DUS 1789, Standard Test Methods for Quantitative Analysis of Textiles 
DUS ISO 137 , Wool — Determination of fibre diameter — Projection microscope method 
DUS ISO 3998 , Textiles — Determination of resistance to certain insect pests 
DUS ISO 9073-1 , Textiles — Test methods for nonwovens — Part 1: Determination of mass per unit area 
DUS ISO 12945-3 , Textiles — Determination of the fabric propensity to surface pilling, fuzzing or matting — 
Part 3: Random tumble pilling method 
DUS ISO 13935-1 , Textiles — Seam tensile properties of fabrics and made-up textile articles — Part 1: 
Determination of maximum force to seam rupture using the strip method 
DUS ISO 13935-2 , Textiles — Seam tensile properties of fabrics and made-up textile articles — Part 2: 
Determination of maximum force to seam rupture using the grab method 
US 441-2/ISO 7211-2 , Textiles — Woven fabrics — construction — Methods of analysis — Part 2: 
Determination of number of threads per unit length  
US ISO 105-B02 , Textiles — Tests for colour fastness — Part B02: Colour fastness to artificial 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 perspiration 
US ISO 105-X12 , Textiles — Tests for colour fastness — Part X12: Colour fastness to rubbing  
US ISO 1833-1 , Textiles — Quantitative chemical analysis — Part 1: General principles of testing 
US ISO 3801 , Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area 
US ISO 5077 , Textiles — Determination of dimensional change in washing and drying 
US ISO 13934-1 , Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force DRAFT FOR PUBLIC REVIEWDUS 1700-3 : 2017 
vi © UNBS 2017  – All rights reserved  
 DUS 1700-1, School wear fabrics — Part 1: General requirements  
3 Requirements 
3.1 General 
The fabric shall 
a) comply with the basic requirements given in DUS 1700- 1; 
b) have been made from two-ply yarns; 
c) have a clear-cut finish; and 
d) be dyed and, when so required (see A.1),also have a moth-resistant finish. 
3.2 Fabric 
The fabric shall comply with the relevant requirements given in table 1. 
3.3 Moth resistance 
The fabric shall comply, when relevant and when tested in accordance with the requirements for DUS ISO 
3998  
3.4 Defects 
The assessment and stringing of defects, in terms of 4.8 of DUS 1700-1, shall be based on the following 
LAQ’s:  
a) For pieces:10 
b) For a lot:  8 
Table 1―Fabric requirements 
1 2 3 
Property  Requirement  
 US number  
(unless otherwise 
indicated)  
Composition, %  
Polyester , min  
Wool, max  
  
50 
50 
 US ISO 1833 -1 
Wool fibre diameter , mean, µma 22 or 26  DUS ISO 137  
Weave  Twill Visual examination  
Breaking strength , N, min  
Warp  
weft 
  
900 
750 US ISO 13934 -1 
 
Seaming properties (after washing)   DUS ISO 13935 -1 and DRAFT FOR PUBLIC REVIEWDUS 1700-3: 2017 
© UNBS 2017  – All rights reserved  vii 
 Resistance to opening at seams , N, 
minb 
Seam strength , N, minb 150 
 
165 DUS ISO 13935 -2 
Ply of yarns  
Warp  
weft 
  
2 
2 Visual examination  
Resistance to pil ling, Rating, min  3-4 (i.e. slight to 
moderate)  DUS ISO 12945 -3 
Non-fibrous material content , %, 
max 2.5 DUS 1789  
Dimensional changes on washing , 
%, max  
Warp  
Weft  
 
3 
3 
 US ISO 5077  
Colour fastness to:  
Washing , rating, min : 
Change in colour  
Staining of transfer cloths  
Perspiration , rating, min : 
Change in colour  
Staining of transfer cloths  
Rubbing , rating, min : 
Dry 
Wet 
Light , rating, min   
 
4 
3-4 
 
4 
3-4 
 
4 
3-4 
5  
US ISO 105 -C10 
 
 
US ISO 105 -E04 
 
 
US ISO 105 -X12 
 
US ISO 105 -B02 
a.Subject to a tolerance of ± 5%.  
b.Both warp and weft directions  
4 Packing, labelling, marking and inspection 
The relevant clauses of DUS 1700-1 shall apply (see A.1). 
 
 
 DRAFT FOR PUBLIC REVIEWDUS 1700-3 : 2017 
viii © UNBS 2017  – All rights reserved  
 Annex A  
(Normative)  
 
Note to purchasers 
A.1 The following requirements shall be specified in tender invitations and in each order or contract: 
a) the colour (see 3.1, and also 4.7 of DUS 1700-1);  
b) when relevant, that the fabric shall have a moth-resistant finish (see 3.3); 
c) when relevant, a particular percentage fibre blend (see table 1); 
d) the method of packing, if other than specified (see 6.1 of DUS 1700-1); and 
e) additional marking, if required (see 6.3 of DUS 1700- 1. 
A.2 The following requirements shall be agreed upon between the purchaser and the supplier: 
a) the acceptance of split or fringe selvedges (see 4.3 of DUS 1700-1); and  
b) the fabric width (see 4.4 of DUS 1700- 1) DRAFT FOR PUBLIC REVIEWDUS 1700-3: 2017 
© UNBS 2017  – All rights reserved  ix 
 Annex B  
(Informative)  
 
Recommended end use 
A fabric that complies with the requirements of this part of DUS 1700 is suitable for use in the manufacture of 
boys’ trousers and shorts, girls’ dresses, tunics and gyms, and girls’ slacks and skirts  
 
 DRAFT FOR PUBLIC REVIEWDUS 1700-3 : 2017 
x © UNBS 2017  – All rights reserved  
 Annex C  
(Informative)  
 
Guide to manufacturers and purchasers 
The fabric types given in table C.1 have been found suitable for use in the manufacture of polyester- and-wool 
school clothing. 
Table C.1 ― Suitable fabric types 
1 2 3 4 
Property  Requirement  US number  
(unless otherwise indicated)  Typea 
SK45  SK51  
Composition, %  
Wool  
Polyester   
55±5  
45±5  US ISO 1833 -1 
Weave  2/2 "Z" twill  Visual examination  
Mass per unit area(free from 
non- Fibrous mat erial),  g/m2, min   
230  
240 US ISO 3801 /DUS ISO 9073 -1 
Number of threads per cm, min . 
Warp  
Weft  
24 
21  
26 
23 US 441 -2/ISO 7211 -2 
a Designation by the type number is restricted to fabrics that comply with the above requirements  
 
 
 
 
 
 
 
 
 
 
 
 DRAFT FOR PUBLIC REVIEWDUS 1700-3: 2017 
© UNBS 2017  – All rights reserved  xi 
 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 use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations mad e 
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 ar e 
continually checked by UNBS for conformity to that standard.  
Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 DRAFT FOR PUBLIC REVIEWDUS 1700 -3: 2017    
 
ICS nn.nnn.nn  
Price based on nn pages 
© UNBS 2017 – All rights reserved