G/TBT/N/RWA/409  
20 November 2020  
(20-8373) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  RWANDA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:   
Rwanda Standards Board (RSB)  
KK 15 Rd, 49  
P.O.BOX 7099, Kigali, Rwanda  
Tel: +250 788303492  
Email: info@rsb.gov.rw   
Website: www.rsb.gov.rw  
Name and address (including telephone and fax  numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
3. Notified under Article 2.9.2 [X], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other :  
4. Products covered (HS or CCCN  where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Man-made 
fibres (ICS 59.060.20)  
5. Title, number of pages and language(s) of the notified document:  DRS 443: 2020 
Silk yarn — Specification ( 23 page(s), in English)  
6. Description of content:  This Draft Rwanda Standard specifies the requirements, 
sampling and test methods for raw silk in skein or on cone or bobbin.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Consumer information, labelling; Prevention of deceptive practices and 
consumer protection; Protection of human health or safety; Protection of the 
environment; Quality requirements; Harmonization  
8. Relevant documents:   
• ASTM D2255, Standard test method for grading spun yarns for appearance  
• ASTM D5647, Standard Guide for Measuring Hairiness of Yarns by the Photo -
Electric Apparatus  
• RS ISO 139, Textiles Standard atmospheres for conditioning and testing  
• ISO 2060, Textiles — Yarn from pac kages — Determination of linear density 
(mass per unit length) — Skein method.  
• ISO 2061, Textiles — Determination of twist in yarns — Direct counting method  
• ISO 2062, Textiles — Yarn from packages — Method for determination of breaking 
toad and elongation at the breaking toad of single strand  G/TBT/N/RWA/409  
 
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  • ISO 3951 -4, Sampling procedures for inspection by variables — Part 4: 
Procedures for assessment of declared quality levels  
• ISO 6741 -1, Textiles — Fibres and yarns — Determination of commercial mass of 
consignments — Part 1: Mass determination and calculations  
• ISO 6939, Textiles — Yarns from packages — Method of test for breaking strength 
of yarn by the skein method  
• ISO 15625, Silk — Electronic test method for defects and evenness of raw silk  
• ISO 16549, Textiles — Unevenness of textile strands — Capacitance method  
• ISO 17202, Textiles — Determination of twist in single spun yarns — 
Untwist/retwist method  
• ISO 21046, Silk — Test method for determining the size of silk yarns  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  60 days from notification  
11. Texts available from:  National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
KK 15 Rd, 49  
Toll Free: 3250  
Tel: +250 788303492  
Email: info@rsb.gov.rw  
Website: www.rsb.gov.rw  
P.O.BOX 7099, Kigali, Rwanda  
https://members.wto.org/crnattachments/2020/TBT/RWA/20_7148_00_e.pdf