G/TBT/N/UGA/885  
 
13 July 2018  
(18-4408) 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): Textiles, 
paints, plastics.   
Paints and varnishes (including enamels and lacquers) based on synthetic polymers or 
chemically modified natural polymers, dispersed or dissolved in a non -aqueous medium; 
solutions as defined in Note 4 to this Chapter. (HS 3208), Paints and varnishes (including 
enamels and lacquers) based on synthetic polymers or chemically modified natura l 
polymers, dispersed or dissolved in an aqueous medium. (HS 3209). Paints and varnishes 
(ICS 87.040), Textiles in general (ICS 59.080.01), Plastics (ICS 83.080).  
5. Title, number of pages and language(s) of the notified document: DUS 2004: 2018, 
Standard  Practice for Calculating Yellowness and Whiteness Indices from Instrumentally 
Measured Color Coordinates, First Edition. (13 page(s), in English)   
6. Description of content: This Draft Uganda  Standard  provides numbers that correlate 
with visual ratings of yellowness or whiteness of white and near -white or colorless object -
color specimens, viewed in daylight by an observer with normal color vision. White textiles, 
paints, and plastics are a few of the materials that can be described by the indices of 
yellowness or whiteness calculated by this practice.   
For a complete analysis of object colors, by a specified observer and under a specified 
illuminant, use of three parameters is required. For near -white specimens, however, it is 
often useful to calculate si ngle-number scales of yellowness or whiteness. This practice 
provides recommended equations for such scales and discusses their derivations and uses, 
and limits to their applicability.  
The values stated in SI units are to be regarded as standard. No other units of 
measurement are included in this standard.  
7. Objective and rationale, including the nature of urgent problems where 
applicable: Prevention of deceptive practices and consumer protection; Protection of 
human health or safety; Harmonization  G/TBT/N/UGA/885  
 
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  8. Relevant documents:   
1. ASTM D1535  Practice for Specifying Color by the Munsell System  
2. ASTM D1729  Practice for Visual Appraisal of Colors and Color Differences of 
Diffusely -Illuminated Opaque Materials  
3. ASTM D1925  Test Method for Yellowness Index of Plastics,  
4. ASTM E284  Terminology of Appearance  
5. ASTM E308  Practice for Computing the Colors of Objects by Using the CIE System  
6. ASTM E805  Practice for Identification of Instrumental Methods of Color or Color -
Difference Measurement of Materials  
7. ASTM E991  Practice for Co lor Measurement of Fluorescent Specimens Using the 
One-Monochromator Method  
8. ASTM E1164  Practice for Obtaining Spectrometric Data for Object -Color Evaluation  
9. ASTM E1247  Practice for Detecting Fluorescence in Object -Color Specimens by 
Spectrophotometry  
10. ASTM E1331  Test Method for Reflectance Factor and Color by Spectrophotometry 
Using Hemispherical Geometry  
11. ASTM E1345  Practice for Reducing the Effect of Variability of Color Measurement by 
Use of Multiple Measurements  
12. ASTM E1347  Test Method for Color and Color -Difference Measurement by 
Tristimulus Colorimetry  
13. ASTM E1348  Test Method for Transmittance and Color by Spectrophotometry Using 
Hemispherical Geometry  
14. ASTM E1349  Test Method for Reflectance Factor and Color by Spectrophotometry 
Using Bidirectional (45°:0° or 0°:45°) Geometry  
15. ASTM E1360  Practice for Specifying Color by Using the Optical Society of America 
Uniform Color Scales System  
16. ASTM E1499  Guide for Selection, Evaluation, and Training of Observers  
17. ASTM E1541  Practice for Specifying and Matching Color Using the Colorcurve 
System (Withdrawn 2007)  
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: