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ISO/CD 22755

Paints and varnishes — Contact angle of powders.

General information

30.20     Apr 27, 2026

ISO

ISO/TC 35/SC 9

International Standard

Scope

This document specifies the test methods for measuring the contact angle of powders. The sessile drop method is used for contact angles larger or equal to 90°. The Wilhelmy plate and liquid penetration (Washburn) methods are used for contact angles smaller than 90°. Time dependent effects are not considered in this document. The powders should not be soluble in the test liquid.

Life cycle

NOW

PROJECT
ISO/CD 22755
30.20 CD study/ballot initiated
Apr 27, 2026

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