PUBLIC REVIEW DRAFT DRAFT UGANDA 
STANDARD  
  DUS DEAS 1051  
First Edition  
2021 -mm-dd 
 
 Reference number  
DUS DEAS 1051: 2021  
© UNBS 2021  
   
Two-pack epoxy primer — Specification  
 
 PUBLIC REVIEW DRAFTDUS DEAS 1051: 2021  
ii                © UNBS  2021  - 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 2021  
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 7 333 2 50/1/2 
Fax: +256 41 4 286 123  
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  
 
 
  PUBLIC REVIEW DRAFTDUS DEAS 1051: 2021  
© UNBS  2021  - 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 amen ded. UNBS is m andated to co -
ordinate the elaboration of standards and is  
(a) a member of International Organisatio n for Standardisation (ISO),  
(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 recomm ending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council.  
This Draft Uganda Standard, DUS DEAS 1051: 2021 , Two-pack epoxy primer — Specification , is identical 
with and has been reproduced from an East Af rican  Standard, EAS 1051: 2021 , Two-pack epoxy primer — 
Specification , and adopted  as a Uganda Standard . 
The committee responsible for this document is Technical Committee UNBS/ TC 302, Paints, varnishes and 
related products . 
Wherever the words, “ East Afric an Standard " appear, they should be replaced by "Uganda Standard ".  DEAS 1051 :2021 
ICS 87.040  
 
 
© EA C 2021                                                                                                                             First Edition 2021 
 DRAFT EAST AFRICAN STANDARD  
Two-pack epoxy primer — Specification  
EAST AFRICAN COMMUNITY  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  ii 
 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 docum ent 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 2021 — All rights reserved  
East African Community   
P.O. Box 1096 , 
Arusha  
Tanzania  
Tel: + 255 27 2 162100  
Fax: + 255 27 2162190  
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 pr osecuted . 
 DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  iii 
 Foreword  
Development of the East African Standards has bee n 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 excha nged 
within the Community will be removed.  
The Community has established an East African Standards Committee  (EASC)  mandated to develop and 
issue East African Standards  (EAS) . The Committee is composed of representatives of the National 
Standards Bodies i n Partner States, together with the representatives from the public and private sector 
organizations  in the community .  
East African Standards are developed through  Technical Committees that are representative of key 
stakeholders including government, acad emia, consumer groups, private sector and other interested parties. 
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 finaliz ation of standards, in 
accordance with the Principles and procedures for development of East African Standards.  
East African Standards are subject to review, to keep pace with technological advances. Users of the East 
African Standards are therefore expec ted to ensure that they always have the latest versions of the standards 
they are implementing .  
The committee responsible for this document is Technical Committee EASC/TC 070, Paints, varnishes and 
related products.   
Attention is drawn to the possibility that some of the elements of this document may be subject of patent 
rights. EAC shall not be held responsible for identifying any or all such patent rights.  
 DRAFT EAST AFRICAN STANDARD  DEAS 1051 :2021 
 
© EAC 20 21 – All rights reserved  1 
 Two-pack epoxy primer — Specification  
1 Scope  
This Draft East African Standard specifies require ments, sampling and test  methods for a two - pack epoxy 
solvent based primer used for protection of iron, steel and galvanized iron and steel against atmospheric 
corrosion in an industrial or marine environment.  
It’s also used as an anticorrosive primer for  decks, deck fittings and cargo holds and for use at maintenance 
and repair or on board maintenance . 
2 Normative references  
The following documents are referred to in the text in such a way that some or all of their content constitutes 
requirements 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.  
ASTM F735 -17, Standard Test Method for Abrasion Resistance of Transparent Plastics an d Coatings Using 
the Oscillating Sand Method  
ISO 1524 , Paints, varnishes and printing ink — Determination of fineness of grind  
ISO 2812 -1, Paints and varnishes — Determination of resistance to liquids — Part 1: Immersion in liquids 
other than water  
ISO 281 3, Paints and varnishes — Determination of specular gloss of non -metallic paint films at 20°, 60° and 
85° 
ISO 2884 -2, Paints and varnishes — Determination of viscosity using rotary viscometers — Part 2: Disc or ball 
viscometer operated at a specified speed  
ISO 3251, Paints varnishes and plastics — Determination of non - volatile matter content  
ISO 3270,  Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and 
testing  
ISO 3856 -6, Paints and varnishes — Determination of " soluble" metal content — Part 6: Determination of total 
chromium content of the liquid portion of the paint — Flame atomic absorption spectrometric method  
ISO 4618, Paints and varnishes — Terms and definitions  
ISO 6503 Paints and varnishes -- Determination  of total lead — Flame atomic absorption spectrometric 
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 9 117-1, Paints and varnishes — Drying tests — Part 1: Determination of through -dry state  and through -
dry time  
ISO 9117 -3, Paints and varnishes — Drying tests — Part 3: Surface -drying test using ballotini  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  2 
 ISO 15528 , Paints, varnishes and raw materials for paints and varnishes — Sampling  
ISO 17132, Paints and varnishes — T-bend test  
3 Terms an d definitions  
For the purposes of this document , the definitions given in ISO 4618 and  the following  apply:  
3.1  
component  
a term used to describe each of two parts of the paint, which when mixed together form the pigmented epoxy 
layer  
3.2 
epoxy primer  
a paint consisting essentially of epoxy resin base, polyamide, amine adduct or other hardeners with 
appropriate pigments, solvent and additives mixed together in the proportions  recommended by the 
manufacturer  
3.3 
protective coating system  
total number of coats of paint or related product which are to be applied or which have been applied to a 
substrate to provide corrosion protection  
3.4 
pot life  
the maximum time during which a coating material supplied as separate components should be used after 
they have b een mixed together  
3.5  
Volatile organic compound content  
the mass of the volatile organic compounds present in a coating material, as determ ined under specified 
conditions  
3.6 
volatile organic compound  (VOC ) 
fundamentally, any organic liquid and/or solid that evaporates spontaneously at the prevailing temperature 
and pressure of the atmosphere with which it is in contact  
3.7 
ready for use  
the state of a product when it is mixed in accordance with the manufacturer's instructions in the correct 
proportions a nd thinned if required using the correct thinners so that it is ready for app lication by the approved 
method  
4 Requirements  
4.1 General requirements  
4.1.1  Condition in the container  
When visually examined, the tw o-pack epoxy primer  shall be free from skin s, uncharacteristically coarse 
particles, foreign matter and lumps.  The container shall be free from rust and moulds.  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  3 
 4.1.2  Odour  
The odour of the two -pack epoxy primer - in the container, during and after application shall not be abnormally 
pungent, offen sive or disagreeable.  
4.1.3 Settling  
The epoxy primer shall be free from settling. Settling if any, shall be easily incorporated by stirring.  
4.6 Application properties  
The epoxy primer shall be supplied in two containers as a unit. Always mix a complete u nit in the proportions 
applied. The application shall be done in accordance with manufacturer’s instructions.  
 
4.2 Specific requirements  
4.2.1  Wet coat 
The wet mixed material shall also comply with the requirements given in the Table 1  when tested in 
accor dance with the test methods specified therein . 
Table 1 — Requirements for the wet coat of two pack epoxy primer  
 
4.2.1  Dry coat 
The dry coat of the two pack epoxy primer  shall comply with the requirements given in the Table 2 when 
tested i n accordance with the test methods specified therein . 
Table 2 — Requirements for the dry coat, two pack epoxy primer  
S/N Characteristic  Requirement  Test method  
i.  Dry film thickness per coat  30 µm, min.  Mikro test method  
ii.  Finish  Smooth, uniform in colour a nd Visual examination  S/N Characteristic  Requirement  Test method  
i.  Total l ead content,  ppm, max . 90 ISO 6503  
ii.  Solids content, %,m/m, min.  50 ISO 3251  
iii.  Skin formatio n Shall show no skin formation  Annex A  
iv.  Viscosity,  pa.s 0.4 – 0.8 ISO 2884 -2 
v.  Pot life,  h, max 8 Annex B 
vi.  Hiding p ower, %, min . 90 ISO 6504 -3 
vii.  Fineness of dispersion,  /Fineness of 
grind Hegman -Type Gage,  µm, max. 30 ISO 1524  
viii.  Drying time at 25 
˚C ± 2 ˚C, h, max. Hard drying  24 ISO 9117 -1 
Surface drying  4 ISO 9117 -3 
ix.  Chromium, ppm in dried paints, max . 5 ISO 3856 -6 DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  4 
 S/N Characteristic  Requirement  Test method  
appearance  
iii.  Gloss at 600, ,min. 6 %  ISO 2813  
iv.  Scratch hardness using 
15 N  No such scratches shall produce a bare 
metal  ASTM F735 -17 
v.  Flexibility and adhesion 
using 12 mm mandrel  There shall be no visible damage or 
detachment of fi lm after 48 h  ISO 17132  
vi.  Resistance to liquids other 
than water  The film shall not show signs of 
disintegration or change of colour to a 
great extent. The loss of gloss shall not 
be more than 50 % of the original gloss  ISO 2812 -1 
4.3 Quantity of material  
The quantity of material s hall not be less than the declared volume at 25 0C + 2 0C when tested in accordance 
with Annex D. 
5 Packaging and marking  
5.1 Packaging  
The epoxy primer shall be packed in suitable containers that prevents it from deterioration d uring storage, 
transportation and normal handling . 
5.2 Marking  
5.2.1  Marking on the container  
5.2.1.1  The marking shall be either in English, Kiswahili or French or in combination as agreed between the 
manufacturer and the supplier. Any other language shal l be optional . 
5.2.1.2  Each container shall be marked legibly and indelibly with the following:  
a) name of the product  as “Two pack epoxy primer” ; 
b) manufacturers name and physical address;  
NOTE  The name, physical address of the distributor/supplier and tradema rk may be added as required . 
c) net content in L ; 
d) date of manufacture;  
e) spreading capacity, in m2/L; 
f) instructions for use;  
g) pot-life life at 25 °C; and 
h) an indication of flammability.  
 
5.2.2  Marking on the label of the container  
Each label of the container shall  be marked legibly and indelibly with the following:  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  5 
 a) date of manufacture;  
b) instructions for use;  
c) pot-life; 
d) shelf life;  
e) colour;  and 
f) batch number.  
7 Sampling  
Sampling shall be done in accordance with ISO 15528.  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  6 
 Annex A 
(normative)  
 
Examination of skin formati on 
A.1  Apparat us 
The following apparatus  are required: 
A.1.1  Container, one metal  container of 250 ml with a tight fitting lid. 
A.1.2  Spatula  
A.2 Test conditions  
The test shall be carried out at a temperature of 23 ºC ± 2 ºC and a relative  humidity  of 65 ± 2 per cent. 
A.3  Procedure 
The procedure shall be as follows: 
A.3.1  Stir and pour 125 ml to 130 ml of the paint into the container, place the lid on tightly and 
momen tarily invert the container  to seal the lid. 
A.3.2  Allow the container to stand upright for 7 days. 
A.3.2  Open the container and test the surface of the paint with a spatula f or any skin formatio n. 
Exami ne the walls and the lid for the presence of the skin.  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  7 
 Annex B  
(normative)  
 
Determination of pot life  
B.1 General  
The time taken to double th e viscosity from the original value shall be considered the pot life of the material . 
B.2 Apparatus  
Test panels.  
B.3 Reagents  
Component parts, i.e. base and hardener or catalyst.  
B.4 Procedure  
B.4.1 Thoroughly mix component parts in the ratio specified by the paint manufacturer to give a sample of 
200 mL by volume . 
B.4.2 Within 10 min of mixing, determine the viscosity using a rotating paddle  viscometer.  
B.4.3 Allow the mixed sample of paint to stand in a suitable airtight container and determine viscosity at the 
end of the specified time.  
B.5 Report  
Report whet her viscosity has doubled at 25 °C within 6 h.  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  8 
 Annex C  
(normative)  
 
Resistance to alkali  
C.1 Apparatus  
C.1.1 Test panels  
C.1.2 Vessel, made of inert material, capable of holding test liquids and test panels.  
C.2 Reagents  
5 % sodium hydroxide solution.  
C.3  Procedure  
C.3.1 Prepare and condition the test panels for at least 16 h under standard conditions given in ISO 3270 
i.e. (23 ± 2) °C and (50 ± 5) % relative humidity.  
C.3.2  Immerse panels to a depth  of 50 % for 24 h in 5 % sodium hydroxide solution contained a beaker. 
Stand or hang the test piece in an approximately vertical position in the beaker. If several test pieces are 
loaded at the same time, make sure that they are spaced 5 mm apart.  
C.3.3 Withdraw the panels, wash with distilled water, and examine immediately for any objectionable 
alteration in the surface such as discoloration, change in gloss, blistering, softenin g, swelling, loss of 
adhesion.  
C.3.4 If desired, allow the panels to recover a fter 24 h and examine for retu rn of the original properties.  
C.3.5 In general, it will not be necessary to seal the edges of the applied fil m. If the reagent effect is noted 
only around the panel edges, the test should be repeated using a suitable edge sea ler. 
C.4 Report  
C.4.1 Report the type of effect, if any.  
C.4.2 Detail of the test panel (including thickness) and surface pre -treatment of the substrate.  
C.4.3 Dry film thickness of the coating, in micrometers.  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  9 
 Annex D  
(normative)  
 
Determination of the qua ntity of material  
D.1 Apparatus  
D.1.1 Graduated measuring cylinder  
D.1.2 Empty container  
D.2 Procedure  
Measure out the volume of the paint by pouring it into the measuring cylinder and emptying the paint into an 
empty container. Measure out until all the p aint is finished and record the total volume of the paint by adding 
up the volume.  
D.3 Calculation  
The measured volume shall be expressed as follows:  
% of volume measured is   
100
V1VV  
where  
V1 is the total measured volume;  and 
V is the decl ared volume.  DEAS 1051 :2021  
© EAC 20 21 – All rights reserved  10 
 Bibliography  
KS 1985 -1:2017 , Marine paints — Specification — Part 1: Two -pack epoxy primer marine paint  
 DEAS ….. :2021    
 
© EAC 2021  – All rights reserved