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DRAFT UGANDA STANDARD
DUS 2003
First Edition 2018-mm-dd
This Draft Uganda Standard, DUS 2003:2018, is based on ASTM D1210 – 05, Standard Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage, Copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428, USA, pursuant to license with ASTM International.
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized 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: +256 417 333 250/1/2 Fax: + 256 414 286 123 E-mail: [email protected] Web: www.unbs.go.ug
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 key stakeholders including government, academia, consumer groups, private sector and other interested parties.
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.
The committee responsible for this document is Technical Committee UNBS/TC5/SC2, Paints, Varnishes and related products.
Wherever the words, “ASTM Standard" appear, they should be replaced by "Uganda Standard."
Designation: D1210 – 05 This Draft Uganda Standard, DUS 2003:2018, is based on ASTM D1210 – 05, Standard Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage, Copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428, USA, pursuant to license with ASTM International.
Standard Test Method for
Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage1 This standard is issued under the fixed designation D1210; the number immediately following the designation indicates the year of original adoption or, in the
case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (ε) indicates an editorial change
since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers measurement of the degree of dispersion (commonly referred to as “fineness of grind”) of the
pigment in a pigment-vehicle system such as liquid coatings and their intermediates. It may also be used to assess the
inclusion of particulates by a cleanliness (or texture) rating.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information
only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability
of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:2
D1316 Test Method for Fineness of Grind of Printing Inks By the NPIRI Grindometer
3. Summary of Test Method
3.1 Tapered Gage—The product is spread by means of a scraper in a machined tapered path. At some point in this path,
particles or agglomerates, or both, will become visible. A direct reading from the graduated scale is then made at the point
where the particles form a definite pattern. When the single path gage is used it is also possible to rate “cleanliness” (see 6.2).
3.2 Stepped Gage—The product is spread by means of a scraper on a stepped gage. There are 2 delimited sections on this
gage, each of 6.5 cm2 (1 in.2) area, and of two different depths. A count is made of the particles deposited in the two delimited
areas, and cleanliness (texture) reading is determined.
4. Significance and Use
1 This test method is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct
responsibility of Subcommittee D01.24 on Physical Properties of Liquid Paints and Paint Materials. Current edition approved Dec. 1, 2014. Published December 2014. Originally approved in 1952. Last previous edition approved in 2010 as D1210 – 05
(2010). DOI: 10.1520/D1210-05R14.
2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [email protected]. For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on the ASTM website.
D National Printing Ink Research Institute scale, 0 to 10 on the NPIRI Production Grindometer, but extended on many gages to 20 or 30 (see Test Method D1316).
5.2 Stepped Gage—A hardened steel, stainless steel, or chrome-plated steel block (Fig. 1a), approximately 170 mm (6.7
in.) in length, and 15 mm (0.6 in.) in thickness. A path 25-mm (1-in.) wide shall be cut the length of, and centered in a block
65-mm (2.5-in.) wide. The path will be cut to two different depths, each for half of its length. The two depths will be 3 mils,
and 1 mil, or as agreed upon between the buyer and the seller. There shall be two tick marks, above and below the “step,” and
Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards (UNBS) Certification Mark shown in the figure below.
The use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made thereunder. This mark can be used only by those licensed under the certification mark scheme operated by the Uganda National Bureau of Standards and in conjunction with the relevant Uganda Standard. The presence of this mark on a product or in relation to a product is an assurance that the goods comply with the requirements of that standard under a system of supervision, control and testing in accordance with the certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are continually checked by UNBS for conformity to that standard.
Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda National Bureau of Standards.