A Preface
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This document is prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General Test methods for paints and varnishes.

ISO 2812-2-2018 “Determination of liquid resistance of paints and varnishes – Part 2: Immersion method”

The third edition eliminates and replaces the technically revised second edition (ISO 2812-2:2007). Compared with the previous edition, the main changes are as follows:

– Added terms and definitions (Article 3);

– Reference to tank size has been changed to for reference only;

– The Angle of the test plate support has been changed from 15° to 20° to 0° to 20°;

– The tolerance of water temperature is changed from ±1°C to ±2°C;

— Rearrange the test panel has been changed to “if specified” because it is not always necessary to rearrange the test panel.

A list of all parts 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 full list of these agencies can be found at iso.org/members.html.

ISO 2812-2-2018 “Determination of liquid resistance of paints and varnishes – Part 2: Immersion method”

1 Scope
This document specifies a method for determining the resistance of a single or multi-layer coated material system to water effects by partial or complete immersion.

This method allows determining the effect of water on the coating and, if necessary, assessing the damage to the substrate.

2 Normative references
The following documents are referenced in the text in such a way that some or all of their contents constitute the requirements of this document. For dated references, only the cited version applies. For undated references, the 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 — Test standard panel

ISO 2808, Paints and varnishes — Determination of film thickness

ISO 3696, analytical laboratory water use – specifications and test methods

ISO 4618, Paints and varnishes — Terms and definitions

ISO 4624, Paints and varnishes — Adhesion pull – off test

ISO 4628-2, Paints and varnishes — Assessment of degradation of coatings — Designation of the number and size of defects and the intensity of uniform changes in appearance — Part 2: Assessment of the degree of foaming

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

ISO 15711, Paints and varnishes — Determination of cathodic debonding resistance of coatings exposed to seawater

ISO 17872, Paints and varniases-Guide for the introduction of marking by means of a coating on a metal panel for corrosion testing

ISO 2812-2-2018 “Determination of liquid resistance of paints and varnishes – Part 2: Immersion method”

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

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