G/TBT/N/UGA/1647  
1 July 2022  
(22-5119) Page: 1/3 
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 different from above:   
3. Notified under Article 2.9.2 [  ], 2.10.1 [  ], 5.6.2 [X], 5.7.1 [  ], 3.2 [  ], 7.2 [  ], 
other:  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Petroleum 
gases and other gaseous hydrocarbons. (HS code(s): 2711); Fuels (ICS code(s): 75.160), 
Gaseous Hydrocarbons, Liquefied Petroleum Gases, Natural Gas  
5. Title, number of pages and language(s) of the notified document:  DUS 2527:2022, 
Standard Test Method for Determination of Total Volatile Sulfur in Gaseous 
Hydrocarbons and Liquefied Petroleum Gases a nd Natural Gas by Ultraviolet 
Fluorescence, First Edition ; (17 page(s), in English)  
6. Description of content:  This Draft Uganda Standard covers the determination of total 
volatile sulfur  in gaseous hydrocarbons, Liquefied Petroleum Gases (LPG) and Liquefied 
Natural Gas (LNG). It is applicable to analysis of natural gaseous fuels, process 
intermediates, final product hydrocarbons and generic gaseous fuels containing sulfur in 
the range of 1 to 200 mg/kg. Samples can also be tested at other total sulfur levels using 
either pre -concentration methods or sample dilution using a diluent gas. The methodology 
for preconcentration and dilution techniques is not covered in this test method. The 
precision statement does not apply if these techniques are used in conjunction with this 
test method. The diluent gas, such as UHP nitrogen, zero nitrogen or zero air, shall not 
have a significant total sulfur concentration.  
This test method may not detect sulfur compounds that do not volatilize under the 
conditions of the test. This test method covers the laboratory determination and the at -
line/on -line determination of total volatile sulfur in gaseous fuels, LPG, and LNG. Th is test 
method is applicable for total volatile sulfur determination in gaseous hydrocarbons, LPG, 
and LNG containing less than 0.35 mole  % halogen(s).  G/TBT/N/UGA/1647  
 
- 2 - 
 
  7. Objective and rationale, including the nature of urgent problems where 
applicable:  Prevention of dec eptive practices and consumer protection; Quality 
requirements  
8. Relevant documents:   
1. ASTM D1070 Test Methods for Relative Density of Gaseous Fuels  
2. ASTM D1072 Test Method for Total Sulfur  in Fuel Gases by Combustion and 
Barium Chloride Titration  
3. ASTM D1265 Practice for Sampling Liquefied Petroleum (LP) Gases, Manual 
Method  
4. ASTM D3588 Practice for Calculating Heat Value, Compressibility Factor, and 
Relative Density of Gaseous Fuels  
5. ASTM D36 09 Practice for Calibration Techniques Using Permeation Tubes  
6. ASTM D4150 Terminology Relating to Gaseous Fuels  
7. ASTM D4177 Practice for Automatic Sampling of Petroleum and Petroleum 
Products  
8. ASTM D4784 Specification for LNG Density Calculation Models  
9. ASTM D 5287 Practice for Automatic Sampling of Gaseous Fuels  
10. ASTM D5503 Practice for Natural Gas Sample -Handling and Conditioning Systems 
for Pipeline Instrumentation  
11. ASTM D5504 Test Method for Determination of Sulfur Compounds in Natural Gas 
and Gaseous Fuels by  Gas Chromatography and Chemiluminescence  
12. ASTM D6228 Test Method for Determination of Sulfur Compounds in Natural Gas 
and Gaseous Fuels by Gas Chromatography and Flame Photometric Detection  
13. ASTM D6299 Practice for Applying Statistical Quality Assurance and  Control 
Charting Techniques to Evaluate Analytical Measurement System Performance  
14. ASTM D7166 Practice for Total Sulfur Analyzer Based On -line/At -line for Sulfur 
Content of Gaseous Fuels  
15. ASTM E617 Specification for Laboratory Weights and Precision Mass Sta ndards  
16. ASTM E691 Practice for Conducting an Interlaboratory Study to Determine the 
Precision of a Test Method  
17. ASTM F307 Practice for Sampling Pressurized Gas for Gas Analysis  
18. ASTM MNL 7  
19. GPA 2166 Obtaining Natural Gas Samples for Analysis by Gas Chromatogra phy 
20. GPA 2174 Obtaining Liquid Hydrocarbon Samples for Analysis by Gas 
Chromatography  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  Not applicable.  
10. Final date for comments:  60 days from notification  G/TBT/N/UGA/1647  
 
- 3 - 
 
  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 63 29 
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