DRAFT UGANDA STANDARD DRAFT UGANDA STANDARD  
  DUS EAS 850 
First  Edition  
2015-mm-dd 
 
 Reference number  
DUS EAS 850: 2015 
© UNBS 201 5 
  
Matt solvent-borne paint for interior and exterior use — 
Specification  
 DRAFT UGANDA STANDARDDUS EAS 850: 2015 
ii                © UNBS 2015 - All rights reserved 
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not purport to include all necessary provisions of a contract. Users are 
responsible for its correct application  
© UNBS 2015 
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written 
permission from UNBS. 
Requests for permission to reproduce this document should be addressed to 
The Executive Director 
Uganda National Bureau of Standards 
P.O. Box 6329 
Kampala 
Uganda 
Tel: 256 41 505 995 
Fax: 256 41 286 123 
E-mail: unbs@infocom.co.ug  
Web: www.unbs.go.ug  
 DRAFT UGANDA STANDARDDUS EAS 850: 2015 
© UNBS  2015 - All rights reserved                iii National foreword 
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and 
Cooperatives established under Cap 327, of the Laws of Uganda, as amended.  UNBS is mandated to co-
ordinate the elaboration of standards and is  
(a) a member of International Organisation for Standardisation (ISO) and  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO). 
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is established to deliberate on standards in a given field or area and consists of representatives of 
consumers, traders, academicians, manufacturers, government and other stakeholders. 
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the 
general public for comments. The committee reviews the comments before recommending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council.  
This Draft Uganda Standard, DUS EAS 850: 2015 , Matt solvent-borne paint for interior and exterior use — 
Specification , is identical with  and has been reproduced from an East African  Standard , EAS 850: 2015, Matt 
solvent -borne paint for interior and exterior use — Specification , and is being proposed for adoption as a 
Uganda Standard.
 
Wherever the words, “ East African Standard" appear, they should be replaced by "Uganda Standard." 
 
  DRAFT UGANDA STANDARD FDEAS 850: 2015 
ICS 87.040  
© EAC 2015                                                                                                                              First Edition 2015  
 
FINAL DRAFT EAST AFRICAN STANDARD 
Matt solvent-borne paint for interior and exterior use — Specification 
EAST AFRICAN COMMUNITY DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDFDEAS 850: 2015  
ii © EAC 2015  – All rights reserved  
 Copyright notice 
This EAC document is copyright-protected by EAC. While the reproduction of this document by 
participants in the EAC standards development process is permitted without prior permission from EAC, 
neither this document nor any extract from it may be reproduced, stored or transmitted in any form for 
any other purpose without prior written permission from EAC. 
Requests for permission to reproduce this document for the purpose of selling it should be addressed 
as shown below or to EAC’s member body in the country of the requester:  
© East African Community 2015  — All rights reserved 
East African Community  
P.O.Box 1096 
Arusha 
Tanzania 
Tel: 255 27 2504253/8 
Fax: 255 27 2504481/2504255 
E-mail: eac@eachq.org 
       Web: www.eac -quality.net  
Reproduction for sales purposes may be subject to royalty payments or a licensing agreement. 
Violators may be persecuted 
 DRAFT UGANDA STANDARDFDEAS 850: 2015 
© EAC 2015  – All rights reserved  iii 
 Contents Page 
Foreword .............................................................................................................................................................  v 
1 Scope  ................................ ................................ ................................ ................................ ...................... 1 
2 Normative references  ................................ ................................ ............................................................  1 
3 Terms and definitions  ................................ ................................ ...........................................................  1 
4 Requirements  ................................................................ ................................ ................................ ......... 1 
4.1 General requirements  ................................ ................................ ...........................................................  1 
4.1.1  Condition in the container  ................................ ................................ ................................ .................... 1 
4.1.2  Finish  ................................ ................................ ................................ ................................ ...................... 2 
4.2 Specific requirements  ................................ ................................ ...........................................................  2 
4.2.1  Fastness to light  ................................ ................................................................ ................................ .... 2 
4.2.2  Brushing properties  ................................ ................................ ..............................................................  2 
4.2.3  Rolling  properties  ................................ ................................................................ ................................ .. 2 
4.2.4  Other quality requirements  ................................ ................................ ................................ .................. 2 
5 Weights and measures  ................................ ................................ ................................ ......................... 3 
6 Packaging, labelling and marking  ................................................................ ................................ ...... 3 
6.1 Packaging  ................................ ................................ ................................ ................................ .............. 3 
6.2 Labelling and m arking  ................................ ................................ ..........................................................  3 
7 Sampling  ................................ ................................ ................................ ................................ ................ 4 
8 Quality of reagents  ................................ ................................ ................................................................  4 
Annex A (normative )  Fastness to light test .................................................................................................... 5  
A.1 Apparatus  ................................ ................................ ................................ ................................ ............... 5 
A.2 Procedure  ................................ ................................ ................................ ................................ ............... 5 
Annex B (informative)  Brushing properties test ............................................................................................  6 
B.1 Apparatus  ................................ ................................ ................................ ................................ ............... 6 
B.2 Procedure  ................................ ................................ ................................ ................................ ............... 6 
Annex C (normative)  Rolling properties test  ................................................................ ................................ .. 7 
C.1 Apparatus  ................................ ................................ ................................ ................................ ............... 7 
C.2 Procedure  ................................ ................................ ................................ ................................ ............... 7 
Annex D (normative)  Examination of skin formation  ................................ ................................ .................... 8 
D.1 Apparatus  ................................ ................................ ................................ ................................ ............... 8 
D.2 Test conditions  ................................ ................................................................ ................................ ...... 8 
D.3 Procedure  ................................ ................................ ................................ ................................ ............... 8 
Annex E (normative)  Resistance to washing test  ................................ ..........................................................  9 
E.1 Principle  ................................ ................................ ................................ ................................ ................. 9 
E.2 Apparatus  ................................ ................................ ................................ ................................ ............... 9 
E.3 Soap solution  ................................................................ ................................ ................................ ....... 10 
E.4 Test conditio ns ................................ ................................................................ ................................ .... 10 
E.5 Test panels  ................................................................ ................................ ................................ ........... 10 
E.6 Preparation of panels  ................................ ................................ ..........................................................  10 
E.7 Procedure  ................................ ................................ ................................ ................................ ............. 10 
Annex F (normative)  Yellowing resistance test  ................................ ...........................................................  12 
F.1 Apparatus  ................................ ................................ ................................ ................................ ............. 12 
F.2 Test conditions  ................................ ................................................................ ................................ .... 12 
F.3 Preparation of test panels  ................................ ................................ ................................ .................. 12 
F.4 Procedure  ................................ ................................ ................................ ................................ ............. 12 DRAFT UGANDA STANDARDFDEAS 850: 2015  
iv © EAC 2015  – All rights reserved  
 F.5 Assessment of yellowing  ................................ ................................................................ ...................  12 DRAFT UGANDA STANDARDFDEAS 850: 2015 
© EAC 2015  – All rights reserved  v 
 Foreword 
 
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standardization, trade barriers that are encountered when goods and services are exchanged 
within the Community will be removed.  
In order to achieve this objective, the Community established an East African Standards Committee mandated 
to develop and issue East African Standards.   
The Committee is composed of representatives of the National Standards Bodies in Partner States, together 
with the representatives from the private sectors and consumer organizations. Draft East African Standards 
are circulated to stakeholders through the National Standards Bodies in the Partner States. The comments 
received are discussed and incorporated before finalization of standards, in accordance with the procedures 
of the Community.  
East African Standards are subject to review, to keep pace with technological advances. Users of the East 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are implementing .  
FDEAS 850 was prepared by Technical Committee EASC/TC 0 70, Paints, vanishes and related products . 
 DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDFINAL DR AFT EAST AFRICAN STANDARD  FDEAS 850: 2015  
 
© EAC 2015  – All rights reserved  1 
 Matt solvent-borne paint for interior and exterior use — Specification 
1 Scope 
This Final Draft East African Standard specifies requirements, sampling and test methods for matt solvent-
borne paint for interior and exterior use, intended for application by brush, spray or roller and any other 
suitable method. 
2 Normative references 
The following referenced documents are indispensable for the application of this document. For dated 
references, only the edition cited applies. For undated references, the latest edition of the referenced 
document (including any amendments) applies. 
ISO 1524, Paints, varnishes and printing ink — Determination of fineness of grind   
ISO 2813, Paints and varnishes — Determination of gloss value at 20 degrees, 60 degrees and 85 degrees  
ISO 2884 (all parts) , Paints and varnishes — Determination of viscosity using rotary viscometers  
ISO 3251, Paints varnishes and  plastics — Determination o f non-  volatile matter content  
ISO 3856-1, Paints and varnishes — Determination of “soluble“ metal content —  Part 1: Determination of lead 
content — Flame atomic absorption spectrometric method and dithizone spectrophotometric method  
ISO 6504-3, Paints and  varnishes — Determination of hiding power — Part 3: Determination of contrast ratio of 
light coloured paints at a fixed spreading rate  
ISO 9117-3,  Paints and varnishes — Drying test — Part 3: Surface drying test using B allotini 
ISO 15528,  Paints, varnishes and raw materials for paints and varnishes — Sampling  
3 Terms and definitions 
For the purposes of this standard , terms and definitions given in ISO 4618 shall apply.  
4 Requirements 
4.1 General requirements 
4.1.1  Condition in the container 
The paint sha ll be free from gel, coarse particles, foreign matter and skin and shall be in such a condition that 
at the time of delivery by stirring produces a homogenous product of uniform consistency. DRAFT UGANDA STANDARDFDEAS 850: 2015  
2 © EAC 2015  – All rights reserved  
 4.1.2  Finish  
When two coats of paint are applied at a minimum of 12 h interval by brush, spray , roller or any other suitable 
method to a test panel of paper -faced plasterboard, the film when dry shall be of uniform colour and 
appearance with a matt finish.  
4.2 Specific requirements 
4.2.1 Fastness to light 
When the paint is tested in accordance with Annex A, using test panels of sealed cardboard painted with two 
coats of paint, the fastness of light shall be such that after 28 days of testing, there shall be no visible 
difference between the two panels. 
4.2.2 Brushing properties  
When tested in accordance with Annex B on a vertical paper-faced plasterboard test panel, the paint shall be 
easy to apply and shall not exhibit spreading, levelling and lapping properties.  The paint film when dry shall 
not show signs of sagging, running or streaking, and shall be free from brush marks. 
4.2.3 Rolling properties  
When tested in accordance with Annex C on a vertical paper-faced plasterboard test panel using a roller, the 
paint shall show no rolling, spreading, levelling and lapping properties with no more than slight transient 
bubbling, dripping, clogging or flay-off of paint from the roller. 
The film when dry shall be free of sags, runs and any other undesirable film characteristics. 
4.2.4 Additional specific requirements  
The paint shall comply with the quality requirements specified in Table 1 when tested in accordance with the 
methods therein. DRAFT UGANDA STANDARDFDEAS 850: 2015 
© EAC 2015  – All rights reserved  3 
  
Table 1 — Specific requirements for matt solvent-borne paints 
S No.  Parameter  Requirement  Test method  
(i)  Fineness of grind , µm, max. 25 ISO 1524  
(ii)  Solids content %, m/m , min. 50 ISO 3251  
(iii)  Skin formation  Nil Annex D  
(iv)  Viscosity, KU (equivalent to Pa.s)  80-100 a) ISO 2884  
(v)  Drying times  at 25 ºC ± 2 ºC, h: 
 Surface drying time  
 Hard drying time   
1 - 3 
4 - 12 ISO 9117 -3 
(vi)  Gloss  b), %, max . 8 ISO 2813  
(vii)  Opacity,  contrast ratio, % , min . 90 ISO 6504 -3 
(viii)  Resistance to washing, gloss 
change, max.  4 Annex E  
(ix)  Resistance to yellowing (dark 
chamber) (for white paints only) 
on grey scale, max.  8 Annex F  
(x)  Lead content, ppm, max. 100 ISO 3856 -1 
a) When u sing a rotating paddle viscometer, r esults for viscosity are dependent on the spindle 
number and the speed of the spindle .  
b) After drying for 16 h  and tested using a 60 º head gloss meter . 
 
5 Weights and measures  
The fill and volume of the paint shall co mply with Weights and Measures regulations of the respective Partner 
State s. 
6 Packaging, labelling and marking 
6.1 Packaging 
The paint shall be packaged in a suitable container that prevents it from deterioration during storage, 
transportation and normal handling 
6.2 Labelling and marking 
6.2.1 The labelling shall be either in English, Kiswahili or French or in combination as agreed between the 
manufacturer and the supplier. Any other language shall be optional. 
6.2.2 The paints shall be packaged in containers that are legibly and indelibly marked with the following 
information: 
a) the name of the product shal l appear as “M att solvent-borne  paint ”; 
b) manufacturer ’s name and/or registered trade mark; DRAFT UGANDA STANDARDFDEAS 850: 2015  
4 © EAC 2015  – All rights reserved  
 c) indication of colour/colour code; 
d) date of manufacture; 
e) net content; 
f) batch/code number; 
g) country of origin; 
h) expiry date or best before date; and  
i) instructions for use and safety.  
7 Sampling 
Sampling shall be done in accordance with ISO 15528. 
8 Quality of reagents 
Analytical grade reagents and distilled water or deionized water of equivalent purity shall be used for the 
appropriate tests. DRAFT UGANDA STANDARDFDEAS 850: 2015 
© EAC 2015  – All rights reserved  5 
 Annex A 
(normative) 
 
Fastness to light test 
A.1 Apparatus 
A.1.1 Test panels,  two sealed cardboard panels, each 10 cm x 5 cm 
A.1.2 Geometric grey scale , for assessing colour change 
A.2 Procedure 
Coat the panel and air-dry for 24 h. Fix one panel approximately 2 cm from a clean window pane, using a 
suitable adhesive tape, with the painted side facing the glass. The pane shall be of common, transparent 
window glass, approximately 2 mm thick, and shall be vertical, facing a direction unshaded by buildings and 
trees. 
Place the other panel in darkness, for example, in a closed black envelope. After 28 days, measure the 
contrast between the panels using the Geometric Grey scale. DRAFT UGANDA STANDARDFDEAS 850: 2015  
6 © EAC 2015  – All rights reserved  
 Annex B 
(informative) 
 
Brushing properties test 
B.1 Apparatus 
B.1.1  Brush , a good quality pure bristle brush for paint, 4 cm - 6 cm wide 
B.1.2  Test panel , paper-faced plasterboard panel not smaller than 50 cm x 50 cm, placed vertically or 
nearly so and rigidly held (for example, fixed to a solid backing) to prevent movement during testing 
B.2 Procedure 
Wet the brush with the paint properly and apply the paint to the test panel by criss cross strokes across a 
section of the panel and then, where appropriate, lay off the coat with vertical strokes using the tip of the 
brush. Coat the next section in the same manner and continue this procedure until three quarters of the panel 
is covered as evenly as practicable, noting the ease or difficulty of lapping until the whole panel is coated. 
During application, note such properties as the brushing, flowing, spreading levelling and setting up of the 
paint. Allow the film to dry for 24 h and examine test area of lapping and that adjacent for differences in gloss 
and/or other defects. DRAFT UGANDA STANDARDFDEAS 850: 2015 
© EAC 2015  – All rights reserved  7 
 Annex C 
(normative) 
 
Rolling properties test  
C.1 Apparatus 
C.1.1  Roller coater , of size 10 cm - 15 cm 
C.1.2  Commercial roller tray  
C.1.3  Test panels , paper-faced plasterboard panels not smaller than 1 m x 1 m, placed vertically or nearly 
vertically and rigidly held to prevent movement during the test 
C.2 Procedure 
C.2.1  Saturate the roller with paint using the roller tray. Remove the excess paint by rolling on the subsidiary 
panel. Apply paint to a section of the test panel. 
C.2.2  Continue the steps in C.2.1 until three quarters of the panel is covered evenly, noting the ease or 
difficulty of lapping until the whole panel is coated.  During application, note such properties as rolling, flowing, 
spreading, levelling, bubbling, dripping, clogging and fly-off. 
C.2.3 Allow the film to dry for  24 h and examine the area of lapping and that adjacent for differences in 
gloss and/or other defects. DRAFT UGANDA STANDARDFDEAS 850: 2015  
8 © EAC 2015  – All rights reserved  
 Annex D 
(normative) 
 
Examination of skin formation 
D.1 Apparatus 
D.1.1  Container , one metal container of 250 mL with a tight fitting lid 
D.1.2  Spatula  
D.2 Test conditions 
The test shall be carried out at a temperature of 25 o C ± 1 o C and a relative humidity of 65 % ± 2 %. 
D.3 Procedure 
Pour 125 mL - 130 mL of the paint into the container, place the lid on tightly and momentarily invert the 
container to seal the lid. Allow the container to stand upright for seven days. Open the container and test the 
surface of the paint with a spatula for any skin formation.  Examine the walls and the lid for the presence of 
skin. DRAFT UGANDA STANDARDFDEAS 850: 2015 
© EAC 2015  – All rights reserved  9 
 Annex E 
(normative) 
 
Resistance to washing test 
E.1 Principle 
The paint to be tested is applied to the test panels. After drying and conditioning, the paint films are 
mechanically washed over a specified number of cycles with a sponge, soaked in soap solution. The 
resistance of the paint  film to washing is assessed, particularly in respect to changes in colour and gloss, by 
comparing it to unwashed control film. 
E.2 Apparatus 
E.2.1 Paint washable machine,  (see Figure E.1), consisting essentially of a mechanism which imparts 
a lengthwise reciprocating motion to a metal box fitted with a sponge, across the surface of a fixed test panel.  
The total mass of the dry sponge and its metal box shall be 45.0 g ± 15 g.  The reciprocating mechanism shall 
not impart any vertical force to metal box. 
The length of stroke of the sponge over the test surface shall be about 30 cm. 
A constant  rate of travel of the sponge over the test surface shall be maintained in the range of 30 cycles/min 
- 40 cycles/min. 
 
Figure E.1 — Wet abrasion tester 
 DRAFT UGANDA STANDARDFDEAS 850: 2015  
10 © EAC 2015  – All rights reserved  
 E.2.2 Sponge , a pre-shrunk sponge cut to a dry size of approximate dimensions 10 cm x 7.5 cm x 4 cm 
E.2.3 Drip feed, a constant drip of soap solution shall be applied to the test surface throughout the test 
period on an area which will not be used for gloss measurements  
E.2.4 Paint applicator,  having a gap of approximately 100 µm and producing paint films approximately 
12 cm wide 
E.2.5 Geometric grey scale 
E.3 Soap solution 
A 5 g/L solution of anhydrous sodium oleate made up with distilled water of deionized water of equal purity will 
be required. 
E.4 Test conditions 
The test shall be carried out at a temperature of 25 o C ± 1 o C and a relative humidity of 65 % ± 2 %. 
E.5 Test panels 
Two test panels made of tin plate will be required.  The test panel to be used for the washability testing (Panel 
A) shall have typical dimensions of 15 cm x 45 cm and the control panel (Panel B) shall have dimensions not 
less than 15 cm x 25 cm. 
E.6 Preparation of pane ls 
Place the panels on a flat surface. Apply a film of paint to the panels by means of the applicator. Air-dry the 
panels for 24 h. Allow t he panels to stand upright for seven  days.  
E.7 Procedure 
E.7.1  By use of a gloss meter, measure the specular gloss of Panel A using a 85º exposure head when the 
60º gloss of the paint is less than 30. 
E.7.2  Secure panel A in the tray of the washability apparatus and adjust the drip feed so that the soap 
solution falls onto the test surface at a rate of 0.5 mL/min - 0.75 mL/min (approximately 10 drops/min - 15 
drops/min ). 
E.7.3  Soak the sponge in distilled water or deionized water for 5 min, remove from the water and squeeze, 
with one hand, until no water drips from the sponge. 
E.7.4  Pour 50 mL of the soap solution uniformly over the sponge and attach the wet sponge to the metal 
box, minimizing solution loss. 
E.7.5  After ensuring that the attached counting device has been set to zero, start up the machine. 
E.7.6  After 500 cycles, turn the machine off and remove panel A from the apparatus. 
E.7.7  Rinse panel A under running tap water for 1 min and then give it a final rinse with distilled or 
deinonized water. Allow it to stand vertically under ambient conditions for 2 h. DRAFT UGANDA STANDARDFDEAS 850: 2015 
© EAC 2015  – All rights reserved  11 
 E.7.8  At the end of this time, inspect the panel, noting any signs of integrity failure. 
E.7.9  Measure the gloss on the washed surface of Panel A using the same geometry as was used in the 
original measurement. 
E.7.10  Compare the colour of the washed area of Panel A with that of Panel B using the geometric grey 
scale. DRAFT UGANDA STANDARDFDEAS 850: 2015  
12 © EAC 2015  – All rights reserved  
 Annex F 
(normative) 
 
Yellowing resistance test 
F.1 Apparatus 
F.1.1  Container , light-proof container such that the painted panels stored therein have free access to air, 
e.g., a ventilated locked drawer. 
F.1.2  Panels , sealed white cardboard of dimensions not smaller than 10 cm x 50 cm. 
F.1.3  Artificial daylight unit , having two sources of illumination.  The daylight source shall have a 
correlated colour temperature of 6 300 K – 7 500 K and the incandescent source shall have a colour 
temperature of 2 300 K – 3 000 K. 
The illumination in the viewing area shall be between 1 000 lux – 1 750 lux and the internal surroundings of 
the cabinet shall have the Munsell neutral grey colour N6 to N7. 
F1.4  Geometric grey scale , for assessing degree of staining. 
F.2 Test conditions 
The test shall be carried out at a temperature of 25 o C ± 1 o C and a relative humidity of 65 % ± 2 %. 
F.3 Preparation of test panels 
F.3.1  Apply three coats of the paint at a recoating interval of 1 h.  Retain some paint for the preparation of 
control test panels. 
F.3.2  Allow the final coat to dry for 24 h in conditions specified in Clause F.2. 
F.4 Procedure 
F.4.1  Place the panels in the light-proof container and store for 28 days. 
F.4.2  From the retained paint, prepare test panels as in Clauses F.3.1 and F.3.2, such that the end of the 
drying interval for the final coat coincides with the end of the storage period. 
F.5 Assessment of yellowing 
Place the panels of the stored and freshly prepared paint film side by side in the same plane and the grey 
scale in the adjacent position in the same plane.  Examine under the artificial daylight unit.  Rate the degree of 
the stored film from ten to zero by doubling the corresponding grade on the grey scale.  DRAFT UGANDA STANDARDFDEAS 850: 2015 
© EAC 2015  – All rights reserved  13 
 Bibliography 
KS 813:2013, Matt solvent-borne paints for interior and exterior use — Specification  DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDFDEAS 850: 2015    
 
© EAC 2015 – All rights reserved