ASTM D7786-13(2019)
Standard Test Method for Determining Enamel Holdout

Standard No.

ASTM D7786-13(2019)

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D7786-13(2019)

Scope

1.1 This standard provides a method for determining the holdout characteristics of a primer and topcoat coating application. A standard topcoat is used to determine the absorption characteristics of a primer. Enamel holdout can be measured as a difference in observed gloss of the topcoat over a primer, relative to the gloss of the same topcoat over a non-porous, smooth surface. 1.2 The standard is written in the context that the user will be evaluating the enamel holdout characteristics of a primer. Alternatively, the standard may be used as a method to evaluate the enamel holdout characteristics of primer/topcoat system where the primer is constant and different topcoats are used as test paints. 1.3 This standard may also be used for evaluation of paints other than primers as the first coat. In this alteration the user can test the enamel holdout characteristics of a self-primed topcoat, or use of any other type of paint as the primer followed by the use of a standard topcoat. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D7786-13(2019) Referenced Document

• ASTM D1640 Standard Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room Temperature
• ASTM D523 Standard Test Method for Specular Gloss
• ASTM D823 Standard Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
• ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM D7786-13(2019) history

• 2019 ASTM D7786-13(2019) Standard Test Method for Determining Enamel Holdout
• 2013 ASTM D7786-13 Standard Test Method for Determining Enamel Holdout
• 2012 ASTM D7786-12 Standard Test Method for Determining Enamel Holdout