G/TBT/N/UGA/1471  
25 October 2021  
(21-8060) 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:  UGANDA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:   
Uganda National Bureau of Standards  
Plot 2 -12 ByPass Link, Bweyogerere Industrial and Business Park  
P.O. Box 6329  
Kampala, Uganda  
Tel: +(256) 4 1733 3250/1/2  
Fax: +(256) 4 1428 6123  
E-mail: info@unbs.go.ug  
Website: https://www.unbs.go.ug  
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 dif ferent from above:   
3. Notified under Article 2.9.2 [   ], 2.10.1 [   ], 5.6.2 [X], 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):  Coolant 
Additives, Engine Coolant, Engine Coolant Concentrates; Anti -freezing preparations and 
prepared de -icing fluids (excl. prepared additives for mineral oils or other liquids used for 
the same purposes as mineral oils) (HS 3820); Refriger ants and antifreezes (ICS 
71.100.45)  
5. Title, number of pages and language(s) of the notified document:  DUS 2429:2021, 
Standard Test Method for Compatibility of Supplemental Coolant Additives (SCAs) and 
Engine Coolant Concentrates, First Edition (9 page( s), in English)  
6. Description of content:  This Draft Uganda Standard covers determination of the 
compatibility of commercial SCA and commercial ethylene and propylene glycol engine 
coolant concentrates. This test method focuses on the solubility of speci fic chemical 
species formed in the engine coolant. The short duration of the test (24 h), among other 
restrictions, makes the test method of limited use for sorting out a variety of chemical 
compatibility problems in which a component of the SCA may react with a component of 
the coolant additive package. The test as currently written also does not deal with the 
issue of hard water compatibility, in which a component of the coolant or SCA additive 
package reacts with the hardness (Ca and Mg) to form a precip itate.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Prevention of deceptive practices and consumer protection; Quality 
requirements  
8. Relevant documents:   G/TBT/N/UGA/1471  
 
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  1. ASTM D1193 Specification for Reagent Water  
2. ASTM D1796 Test Method for Water and Sediment in Fuel Oils by the Centrifuge 
Method (Laboratory Procedure)  
3. ASTM D3585 Specification for ASTM Reference Fluid for Coolant Tests  
4. ASTM E691 Practice for Conducting an Interlaboratory Study to Determine the 
Precision of a Test Method  
9. Proposed date of adoption:  January 2022  
Proposed date of entry into force:  Not applicable  
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:   
Uganda National Bureau of Standards  
Plot 2 -12 ByPass Link, Bweyogerere Industrial and Business Park  
P.O. Box 6329  
Kampala, Uganda  
Tel: +(256) 4 1733 3250/1 /2 
Fax: +(256) 4 1428 6123  
E-mail: info@unbs.go.ug  
Website: https://www.unbs.go.ug