preface
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This document has been prepared by Technical Committee ISO/TC 35, Paints and Varnishes, Subcommittee SC 9, Common Test Methods for Paints and varnishes.

ISO 2812-3-2019 Paints and varnishes — Determination of liquid resistance — Part 3: Method using absorbent media\

The third edition cancelled and replaced the second edition (ISO 2812-3:212), which was a minor revision. The changes from the previous edition are as follows:

— Article 3, which adds terms and definitions;

— CAS numbers have been added to the reagents listed in Annex A.

A list of all the parts in the ISO 2812 series can be found on the ISO website.

Any feedback or questions about this document should be directed to the user’s national standards body. A complete list of these institutions can be found at iso.org/members.html.

1 range
This document specifies a method of using absorbent media for determining the resistance of single – or multilayer coating material systems to the effects of liquid or paste products.

This method enables the tester to determine the effect of the test substance on the coating and, if necessary, to assess damage to the substrate.

2 Normative references
The following files are referenced in the text in such a way that some or all of the content constitutes the requirements of this document. For dated references, citation-only versions apply. For undated references, the latest version of the reference (including any revisions) applies.

ISO 1513, Paints and varnishes – Examination and preparation of test samples

ISO 1514, Paints and varnishes — Standard panels for testing

ISO 2808, Paints and varnishes – determination of film thickness

ISO 4618, Paints and varnishes — Terms and definitions

ISO 4628-1, Paints and varnishes – Assessment of coating degradation – Designation of intensity of uniform variation in number and size of defects and appearance – Part 1: General introduction and designation of systems

ISO 4628-2, Paints and varnishes – Assessment of coating degradation – designation of number and size of defects, and intensity of uniform changes in appearance – Part 2: Assessment of degree of foaming

ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling

3 Terms and Definitions
For the purposes of this document, the terms and definitions given in ISO 4618 apply.

ISO and IEC maintain databases of terms for standardization at the following addresses:

– ISO online browsing platform: iso.org/obp

— IEC electronic encyclopedia: available at electropedia.org/

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