DRAFT FOR PUBLIC REVIEW  DRAFT UGANDA STANDARD  
  DUS 1700 -2 
First  Edition  
2017 -mm-dd 
 
 
 Reference number  
DUS 1700 -2:2017  
© UNBS 2017   
 School wear fabrics —  Part 2: Blazer fabrics  
 DRAFT FOR PUBLIC REVIEWDUS 1700-2 : 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 1700-2: 20 17 
© UNBS 2017  – All rights reserved  iii 
 Contents Page 
Foreword ............................................................................................................................................................ iv 
1 Scop e ................................ ................................ ................................................................ ...................... 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  ................................ ................................ ....................... 8 
Annex A  (Normative)   Note to purchasers ..................................................................................................... 9  
Annex B  (Normative)   Removable non-fibrous material content of textiles (scouring method) ............ 10 
B.1 Purpose  ................................ ................................ ................................................................ ................ 10 
B.2 Reagen ts ................................ ................................ ................................................................ .............. 10 
B.3 Apparatus  ................................ ................................ ................................................................ ............. 10 
B.5 Procedure  ................................ ................................ ................................................................ ............. 11 
B.5.1  Prescouring  ................................ ................................ ................................................................ .......... 11 
B.5.2  Scouring  ................................ ................................ ................................................................ ............... 11 
B.6 Calculation  ................................ ................................ ................................................................ ........... 11 
B.7 Test report  ................................ ................................ ................................................................ ............ 11 
 DRAFT FOR PUBLIC REVIEWDUS 1700-2 : 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 produc ts]. 
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  1700-2: 2017  
v  
 School wear fabrics — Part 2: Blazer fabrics  
1 Scope  
This part of DUS 1700 covers the specific requirements for six types of plain dyed fabric and one type of 
striped fabric suitable for use in the manufacture of school wear blazers. 
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 3175-2 , Textiles — Professional care, dry-cleaning and wet-cleaning of fabrics and garments — Part 
2: Procedure for testing performance when cleaning and finishing using tetrachloroethene 
DUS ISO 3998 , Textiles — Determination of resistance to certain insect pests 
DUS ISO 8498 , Woven fabrics — Description of defects — Vocabulary 
DUS ISO 12945-3 , Textiles — Determination of the fabric propensity to surface pilling, fuzzing or matting — 
Part 3: Random tumble pilling method 
US 441-2/ISO 7211-2 , Textiles — Woven fabrics — construction — Methods of analysis — Part 2: 
Determination of nu mber 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-D01 , Textiles — Tests for colour fastness — Part D01: Colour fastness to dry-cleaning using 
perchloroethylene solvent 
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 5089 , Textiles — Preparation of laboratory test samples and test specimens for chemical testing  
US ISO 13934-1 , Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force DRAFT FOR PUBLIC REVIEWDUS 1700-2 : 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(except in the case of fabric of Types SPT58, SPT59 and SPT 
61); 
c) in the case of fabric of Types SPR62, SPR47 and SPR62S, have been singed and heat set; 
d) in the case of fabric of TypesSPT58, SPT59 and SPT61, have been heat set and have a dyed 
finish(see A.1); 
e) in the case of fabric of Types SW63, SPR 62 and SPR47 have been plain dye d; 
f) in the case of fabric of Type SW63,and when so required (see A.1), also have a moth-resistant finish; 
and 
g) in the case of fabric of Type SPR62S, have in-woven coloured stripes, made from dyed yarns, and 
have warp stripes of the required colour(s), width(s) and colour sequence and weft yarns of black or 
dark grey, or a colour that is an acceptable match to the ground colour of the fabric (see A.1). 
3.2 Fabric 
The fabric shall be one of the types, and shall comply with the relevant requirements given in table 1 (see 
A.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 in accordance with DUS ISO 
8498 .In each case the assessment shall be based on the following LAQ’s:  
a) For pieces:10 
b) For a lot:  8 
Table 1―Fabric requirements 
1 2 3 4 5 6 7 8 9 
Property  Requirement  US number 
(unless 
otherwise 
indicated)  Typea 
SPT58  SPT59  SPT61  SW63  SPR62  SPR47  SPR62S  
Composition,%     US ISO 1833 -1 DRAFT FOR PUBLIC REVIEWDUS 1700-2: 20 17 
© UNBS 2017  – All rights reserved  vii 
 Wool  
Polyester, min  
Viscose, max  
Textured continuous filament 
Polyester  - 
- 
- 
100 100 
- 
- 
- - 
50 
50 
-  
Wool fibre diameter , Mean 
µmb - 22 - DUS ISO 137  
Weave  See Venetian(see figure 2)  4/1satin  figure 1 Visual 
examination  
Mass per unit area (free from 
non-fibrous material), g/m2, 
min 250 250 255 265 280 285 285 US ISO 3801  
Number of threads per cm , 
min 
Warp  
Weft  
 
27 
31  
 
33 
25  
 
30 
31  
 
33 
27  
 
30 
29  
 
24 
23  
 
40 
21 US 441 -2/ ISO 
7211 -2 
Breaking Strength, N , min  
Warp  
Weft  
1300  
1400   
1620  
1150   
1720  
1950   
450 
400  
1000  
1000   
1200  
1200   
1350  
650 US ISO 13934 -
1 
 
Ply of ya rns 
Warp  
Weft  
- 
-  
2 
2  
2 
2 Visual 
examination  
Resistance to pilling  
Rating, in  
  
-  
- 
  
3-4 (i.e. slight  to moderate)   
DUS ISO 
12945 -3 
Removable non -fibrous 
Material content,  %, max 
Non-fibrous material 
content,  %, max  5 
 
- - 
 
2.5 5 
 
- Annex B  
 
DUS 178 9 
Dimensional changes on:  
Washing , %, max 
Warp  
Weft 
Dry cleaning,  %, max  
Warp  
Weft 
  
 
2 
2 
 
- 
-  
 
- 
- 
 
2 
2  
 
3 
3 
 
- 
- 
 US ISO 5077  
 
 
 
DUS ISO 3175 -
2 
Colour fastness to:  
Washing , rating, min.  
Change in colour  
Staining of transfer cloths  
Dry cleaning , ratin g, min   
 
 
4 
3-4 
  
 
- 
- 
  
 
4 
3-4 
  
US ISO 105 -
C10 
 
US ISO 105 -
D01 DRAFT FOR PUBLIC REVIEWDUS 1700-2 : 2017 
viii © UNBS 2017  – All rights reserved  
 Change in colour  
Perspiration,  rating, min.  
Change in colour  
Staining of transfer cloths  
Rubbing, rating , min.  
Dry 
Wet 
Light , rating, min  
 - 
 
4 
3-4 
 
4 
3-4 
5 4 
 
- 
- 
 
4 
3-4 
4 - 
 
4 
3-4 
 
4 
3-4 
4  
US ISO 105 -
E04 
 
 
US ISO 105 -
X12 
 
US ISO 105 -
B02 
 
 
a Designation by the type number is restricted to fabrics that comply with the above requirements.  
b Subject to a tolerance of ±5%. 
 
 
 X  X X 
 X X  X 
X  X  X 
X  X X  
X X  X  
Figure1―Weave diagram for Type SPT 58 
 
 X X  X 
 X  X X 
X X  X  
X  X X  
X  X  X 
Figure2―  Venetian weave 
4 Packing, labelling, marking and inspection 
The relevant clauses of DUS 1700-1 shall apply (see A.1). DRAFT FOR PUBLIC REVIEWDUS 1700-2: 20 17 
© UNBS 2017  – All rights reserved  ix 
 Annex A  
(Normative)  
 
Note to purchasers 
A.1 The following requirements shall be specified in tender invitations and in each order or contract: 
a) in the case of plain dyed fabric, the colour (see 3.1, and also 4.7 of DUS 1700-1 ); 
b) the fabric type (see 3.2); 
c) when relevant, that a Type SW 63 fabric shall have a moth-resistant finish (see 3.3); 
d) in the case of a Type 62S striped fabric, the colour(s), width(s) and the colour sequence of the stripes 
(see 3.1, and also 4.7 of DUS 1700-1 ); 
e) the method of packing, if other than specified (see 6.1 of DUS 1700-1);and  
f) 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 1700-2 : 2017 
x © UNBS 2017  – All rights reserved  
 Annex B  
(Normative)  
 
Removable non-fibrous material content of textiles (scouring method) 
B.1 Purpose 
This annex  specifies the scouring method for the determination of the removable non-fibrous material content 
of textiles. 
B.2 Reagen ts 
B.2.1 Soap powder or chips , as specified in US ISO 105-C10.  
B.2.2 Soap solution , that contains 1 g of soap (see B.2.1) per 1,000 mL of water. 
B.2.3 Scouring solution  that contains 3 g of sodium carbonate (Na 2CO 3) and 3 g of soap per 1,000 mL of 
water. 
B.2.4 Scouring solution  that contains a volume fraction of approximately 5 % ethanoic acid (acetic acid). 
B.3 Apparatus 
B.3.1 Analytical balance , with a resolution of 0.01 g or better. 
B.3.2 Forced-draught oven , maintained at between 105 °C and 110 °C 
B.3.3 Heat-resistant container , of size suitable for accommodating the test specimen(s) in the appropriate 
volume of solution 
B.4 Sampling and preparation of test specimen 
B.4.1 Take a laboratory sample in accordance with US ISO 5089. Condition the laboratory sample in 
accordance with DUS ISO 139 . From the conditioned laboratory sample cut a test specimen of mass  
approximately 10 g (see B.3.1). 
B.4.2 Take the test specimen in accordance with US ISO 5089 or as agreed upon between the test 
laboratory and the manufacturer to assure a reasonable and acceptable reliability at a reasonable and 
acceptable confidence level. 
B.4.3 Dry the test specimen to constant mass in the forced-draught oven (see B.3.2) and record, to the 
nearest milligram, the final result as the oven-dry mass, in grams, of the test specimen before treatment. 
NOTE  Constant mass is assumed to have been attained when successive weighings, at intervals of 20 min, differ by 
less than 0.05 %. DRAFT FOR PUBLIC REVIEWDUS 1700-2: 20 17 
© UNBS 2017  – All rights reserved  xi 
 B.5 Procedure 
B.5.1 Prescouring 
B.5.1.1 Immerse the test specimen, using a liquor ratio of 100 mL/g of the oven-dried mass of the test 
specimen (see B.4.3), in the soap solution (see B.2.2 and B.3.3) maintained at boiling point, and allow it to boil 
for 15 min. 
B.5.1.2 Rinse the test specimen twice with water at a temperature of 80 °C ± 5 °C. 
B.5.2 Scouring 
B.5.2.1 Immerse the test specimen, using a liquor ratio of 100 mL/g of the oven-dried mass of the test 
specimen (see B.4.3), in the scouring solution (see B.2.3) maintained at 75 °C ± 5 °C, and allow the test 
specimen to steep in the solution for 30 min with intermittent stirring. 
B.5.2.2 Rinse the test specimen five times with water at a temperature of 80 °C ± 5 °C. 
B.5.2.3 Rinse the test specimen once with the souring solution (see B.2.4) and then five times with cold 
water. 
B.5.2.4 Dry the test specimen to constant mass in the forced-draught oven and record, to the nearest 
milligram, the final result as the oven-dry mass, in grams, of the test specimen after treatment. 
B.6 Calculation 
Calculate the removable non-fibrous material content of the test specimen as follows: 
100
12 1mmmN
 
where 
N is the non-fibrous material content, expressed as a percentage of the oven-dried mass of the test 
specimen; 
m1 is the oven-dry mass, in grams, of the test specimen before treatment (see B.4.3); 
m2 is the oven-dry mass, in grams, of the test specimen after treatment (see B.5.2.4). 
B.7 Test report 
Report the following information: 
a) all the data needed to identify the laboratory sample tested; 
b) confirmation that the test was carried out in accordance with this standard; 
c) if applicable, the sampling method used (see B.4.2); 
d) any deviation from this standard; and 
e) the percentage of non-fibrous material content present. DRAFT FOR PUBLIC REVIEWDUS 1700-2 : 2017 
xii © 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 use 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, Uganda 
National Bureau of Standards.  
 
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