• Selecting according to generic formula, such as SSPC Paint #20, AWWA C-204 Interior System #8, MIL Spec. C-15203, etc.• Selecting materials based on performance criteria, such as percent solids by weight and volume, viscosity, weight per gallon, gloss, dielectric strength, permeability, abrasion resistance, pencil hardness, pass 4,000 in a salt fog apparatus, etc., all according to test methods listed in such publications as those issued by ASTM• Single source selection — the adoption of a specific coating or coating system, usually based on known field performance, generally supplied by a single manufacturer or approved equal. It could also include a list of approved systems with manufacturers and products defined for each.
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