Meaning and Purpose
4.1 Test substrates that require free films for physical and mechanical properties such as stretch and elongation (test method D2370), moisture permeability (test method D1653 and E96/E96M), antimicrobial activity (test method D5590) may interfere with the performance of the measured organic coating.

ASTM D4708-2019 Preparation of Homogeneous Free Film with Organic Coating

Scope of
1.1 This specification covers the preparation of organically coated free films for the purpose of determining the physical characteristics of the coating.

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.