Meaning and Purpose
3.1 This test method is especially suitable for the measurement of free films, and also suitable for the measurement of films on laboratory test plates.

3.2 The accuracy and accuracy of the thickness measurement may be affected by the deformation ability of the coating. This test method is not applicable to coatings that are prone to deformation under the load of the measuring instrument.

3.3 When the coating is applied to laboratory test plates, the accuracy and accuracy of the thickness measurement is also affected by the uniformity of the substrate.

Scope of
1.1 This test method includes the use of a micrometer to measure the dry film thickness of paint, varnisher, lacquer and related products. Programs A and B used fixed micrometers, and programs C and D used handheld micrometers. Procedures A and C are not recommended for films less than 12.5 μm (0.5 mille) in thickness. The minimum thickness required for procedures B and D is a function of the minimum thickness required to be able to remove the sample as a free film.

1.2 The following procedures appear:

1.2.1 Procedure A — Fixed micrometer for measuring flat rigid surface coatings.

1.2.2 Procedure B — Fixed micrometer for measuring free film.

1.2.3 Program C — Handheld micrometer for measuring coatings on flat rigid surfaces.

1.2.4 Program D — Handheld micrometer for measuring free films.

1.3 Values expressed in SI units shall prevail. The values given in parentheses are for reference only.

ASTM D1005-95-2020 Standard Test Method for Measuring Dry Film Thickness of Organic Coatings Using Micrometer

1.4 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.

1.5 This international Standard has been developed in accordance with the internationally accepted standardization principles established in the Decision on Principles for the Development of International Standards, Guidelines and Recommendations issued by the Technical Barriers to Trade (TBT) Committee of the World Trade Organization.