DRAFT UGANDA STANDARD DRAFT UGANDA STANDARD  
  DUS DEAS 858 
First  Edition  
2015-mm-dd 
 
 Reference nu mber  
DUS DEAS 858: 2015 
© UNBS 201 5 
  
Base paper for carbon paper — Specification  
 DRAFT UGANDA STANDARDDUS DEAS 858:2015 
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 DEAS 858:2015 
© 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 DEAS 858: 2015 , Base paper for carbon paper —Specification , is identical 
with and has been reproduced from an East African  Standard , DEAS 858: 2015, Base paper for carbon paper  
—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 STANDARDDEAS.858:2015 
ICS  
© EAS 2014                                                                                                                         First Edition 2014  
 
DRAFT EAST AFRICAN STANDARD 
 
Base paper for carbon paper — Specification 
 
 
 
 
 
 
 
 
 
EAST AFRICAN COMMUNITY DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDCD/K/17:2014 
ii © EAC 2014  – 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 2013  — 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 STANDARDDEAS.858:2015 
© EAC 2014  – All rights reserved  iii 
 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 .  
This Draft East African Standard, DEAS.  858:2015 ., was prepared by Technical Committee 
EASC //TC/065 Paper and paper products  is composed  of representatives from National Standards Bodies, 
regulators and academia, together with the representatives from the private sector and consumer 
organizations in Partner States . DRAFT UGANDA STANDARDDRAFT UGANDA STANDARDDRAFT EAST AFRICAN STANDARD  DEAS 858:2015  
 
© EAC 2014  – All rights reserved  1 
 Base paper for carbon paper — Specification 
1 SCOPE 
This Draft East African Standard specifies requirements, sampling and methods of test for base paper for 
carbon paper. 
2 Normative references 
ISO 8791-2:2013  Paper and board -- Determination of roughness/smoothness (air leak methods) -- Part  2: 
Bendtsen method 
ISO 2758:2001  Paper -- Determination of bursting strength 
ISO 15 754:2009 Paper and board test for Z-directional tensile strength 
ISO638:2008  paper, board and pulps -- determination of dry matter content -- oven-drying met hod 
ISO 536:2012 Paper -- Determination of grammage 
 
3 Terms and Definitions 
For the purpose of this standard, the following definitions apply: 
3.1 
base paper  
Paper intended for further conversion by coating; impregnating, or surface lining. 
3.2 
carbon paper 
Paper coated (on one or both sides) with a pressure transferable pigmented or layer dyed used for making 
copies at the same time as an original manuscript or typescript is made. 
4 Grades  
Base paper for carbon papers shall be classified into three different grades as follows: 
Grade 1:Light weight. 
Grade 2:Medium weight. 
Grade 3:Heavy weight. 
 DRAFT UGANDA STANDARDDEAS 858:20 15 
2 © EAC 2014  – All rights reserved  
 4 Requirements  
4.1 General Requirements 
4.1.1  The paper shall be of good formation.  It shall have close texture, smooth and even surface, and fairly 
good opacity. 
4.1.2  It shall be free from slack and tight edges and, as far as possible, from pin-holes, thin spots, cockles 
and creases. 
4.2 Specific requirements  
4.2.1 Width of the Reel  — When tested according to the method described in Annex A  the paper shall have a 
permissible tolerance of ± 0.5 per cent on the agreed width. 
4.2.2.1 The paper shall also comply with the requirements given in Table 1, when tested according to the test methods 
specified therein. 
4.2.3 Tolerance  —  The actual substance shall not differ from the nominal substance by more than ± 5% . 
TABLE 1. Specific requirements for base paper for carbon paper 
CHARACTERISTIC  REQUIREMENTS  
TEST METHOD  
GR.1  GR.2  GR.3  
Grammage , g/m2, ± 5 % 11 16 24 ISO 536  
Ash content, % by mass, 
max.  5 5 5 ISO 638  
Tensile str ength, average of 
both directions, N/15 mm 
strip, min.  14 14 14 ISO  1924 -2 
Bursting strength, kPa, min.  35 35 35  ISO 2758   
Porosity, mL/min., max.  1 1 1 ISO 8791 -2   
† 
5. Packaging 
5.1 The base shall be supplied in evenly wound reels with the wire side of the paper inside.  The number of joints in a 
reel on an average shall not exceed one joint per 2 000 m length. 
This average shall be packaged securely in kraft paper or any other suitable material 
5.2 The paper reel shall be packaged securely in kraft paper or any other suitable material 
6. Labeling 
Each package of base paper shall be marked legibly and indelibly   with the following information: 
(i) Description of grade of the paper; 
(ii) Substance (g/m2); 
 
(iii) The total mass of the reel (kg); 
 
(iv) Date, including month and year of the manufacture; 
 
(v) The name and address of the manufacturer or his registered trade mark; 
(vi) Width of the paper. 
7. Sampling 
To test for the compliance of the base paper to the requirements of this standard, a representative sample shall be take n 
at random from any consignment. DRAFT UGANDA STANDARDDEAS 858:2015 
© EAC 2014  – All rights reserved  3 
 Annex A 
(normative) 
 
Determination of Width of the Reel  
A.1  Apparatus 
Appropriate measuring device 
A.2  Procedure 
Measure to an accuracy of 0.5 mm. the width at five places,of the test sample and record the results.  
A.3  Results 
The average of these five measurements is the width of the paper. 
 
 DRAFT UGANDA STANDARDDRAFT UGANDA STANDARD  
 
© EAC 2014 – All rights reserved