introduction
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ISO 2812-3-2019 – Determination of liquid resistance of paints and varnishes – Part 3: Method using absorbing media

Voluntary, related standards and conformity assessment related ISO specific terminology and express the meaning of and the ISO in the technical barriers to trade (TBT) adhere to the principle of the world trade organization (WTO) information, please see the iso.org/iso/foreword.html.

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

The third edition cancels and replaces the second edition (ISO 2812-3:2012), which was a minor revision. Compared with the previous edition, the changes are as follows:

– Article 3 adding terms and definitions;

– CAS numbers are added to the reagents listed in Annex A.

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

Any feedback or questions regarding 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.

ISO 2812-3-2019 – Determination of liquid resistance of paints and varnishes – Part 3: Method using absorbing media

1 Range
This document specifies a method of using an absorbing medium for determining the resistance of a single – or multilayer coating material system to the effects of a liquid or paste product.

This method enables the tester to determine the impact 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 text in a manner that constitutes part or all of the requirements of this document. For dated references, only the cited version applies. For undated references, a new 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 2812-3-2019 – Determination of liquid resistance of paints and varnishes – Part 3: Method using absorbing media

ISO 4628-1, Paints and varnishes – Assessment of degradation of coatings – number and size of defects and designation of intensity of uniform change in 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.

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