Meaning and Purpose
4.1 Wet film thickness measurement helps to predict dry film thickness. Wet film thickness is usually specified in cases where dry film thickness cannot be measured nondestructively. In addition, the ability to determine the wet film thickness during the application can provide the opportunity to correct the application.

Scope of
1.1 This test method includes the determination of wet film thickness of organic coatings such as paint, varnisher and lacquer. The two methods are described as follows:

1.1.1 In test method A, wet film thickness was measured using a wet film thickness gauge (in imperial or metric scale (see 5.1)) up to 60 mils in the imperial scale series and 700 μm in the metric scale series (Sections 5 — 8).

1.1.2 In test Method B, the Pfund Gage was used to measure wet film thickness up to 14.2 mils (360 micmeters) (Sections 9-13).

ASTM D1212-2020 Standard Test Method for Wet Film Thickness Measurement of Organic Coatings

1.2 Values expressed in SI units are treated as standards. The values given in parentheses are for reference only.

1.3 This standard is not intended to address all safety issues, if any, associated with its use. It is the responsibility of users of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use.

1.4 This international Standard has been developed in accordance with the internationally accepted standardization principles established in the decisions of the Committee on Technical Barriers to Trade (TBT) of the World Trade Organization on the Formulation of International standards, guidelines and recommended principles.