Most of the finished film tests used by industrial painters are based on the American Society for Testing Materials (ASTM) international standards (originally known as the American Standards for Testing and Materials). ASTM has several publications that provide the test methods and how to interpret the results. Some performance tests are based on other sources such as the American Architectural Manufacturers Association (AAMA) or European standards.
It is important to have a precise test method and consistent standard to provide meaningful data and consistent results. A good test method describes how the test panel will be prepared, how the test will be conducted, and how the results will be reported. If the test frequency is too random or the test methods are inconsistent, the results will not be as useful.
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