“Liquid” means a substance or mixture of substances that is capable of a visually-detectable flow using the method in ASTM D-4359-90(2000)e1. The term does not include powders or other materials that are composed entirely of solid particles.

Source. #10527, eff 2-26-14; ss by #13969, eff 5-21-24 (formerly Env-A 4103.56)