G/TBT/N/UGA/923  
 
8 October 2018  
(18-6182) 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  
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 [  ], 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): Waters, 
including natural or artificial mineral waters and aerated waters, not containing added 
sugar or other sweetening matter nor flavoured ; ice and snow. (HS 2201). Drinking water 
(ICS 13.060.20).  
5. Title, number of pages and language(s) of the notified document: DUS 2089: 
2018, Standard Test Method for Uranium in Drinking Water by High -Resolution Alpha -
Liquid -Scintillation Spectrometry, F irst Edition. (15 page(s), in English)   
6. Description of content: This draft Uganda standard specifies a test method for the 
determination of total soluble uranium activity in drinking water in the range of 0.037  Bq/l 
(1 pCi /l) or greater by selective solvent extraction and high -resolution alpha -liquid -
scintillation spectrometry. The energy resolution obtainable with this technique also 
allows estimation of the 238U to 234U activity ratio.  
7. Objective and rationale, includi ng the nature of urgent problems where 
applicable: Protection of human health or safety; Harmonization  
8. Relevant documents:   
1. ASTM D1129 -13, Standard Terminology Relating to Water   
2. ASTM D1193 -06(2018), Standard Specification for Reagent Water   
3. ASTM D2777 -13, Standard Practice for Determination of Precision and Bias of 
Applicable Test Methods of Committee D19 on Water   
4. ASTM D3370 -10, Standard Practices for Sampling Water from Closed Conduits  
5. ASTM D3648 -14, Standard Practices for the Measurement of Rad ioactivity  
6. ASTM D5847, Standard Practice for Writing Quality Control Specifications for 
Standard Test Methods for Water Analysis   
7. ASTM D7282 -14, Standard Practice for Set -up, Calibration, and Quality Control 
of Instruments Used for Radioactivity Measuremen ts G/TBT/N/UGA/923  
 
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  8. "Glossary of Terms Used in Nuclear Analytical Chemistry, " Pure Appl. 
Chem.,  Vol 54, 1982.  
9. McDowell, W. J., McDowell, Betty, Liquid Scintillation Alpha Spectrometry, 
Chemical Rubber Company, Boca Raton, FL, 1994.  
10. Reagent Chemicals, American Chemical Soc iety Specifications, American 
Chemical Society, Washington, DC. For Suggestions on the testing of reagents 
not listed by the American Chemical Society, see Annual Standards for 
Laboratory Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States 
Pharmacopeia and National Formulary, U.S. Pharmacopeial Convention, Inc. 
(USPC), Rockville, MD.  
11. Cadieux, J. R., " Evaluation of a Photo -Electron (sic) Rejecting Alpha Liquid 
Scintillation(PERALS®) Spectrometer for the Measurement of Alpha -Emitting 
Radionuclid es(U), " 7th Symposium on Radiation Measurement and Applications, 
University of Michigan, Ann Arbor, MI, May 1990.  
12. Burnett, W. and Tai, W., Analytical Chemistry, Vol 64, No. 15, 1992.  
9. Proposed date of adoption:  December 2018  
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: