ISO/CD 22755

A draft is being reviewed by the committee.

Abstract

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.