Cleaning

(1) Action of removing, and dissolving or dispersing, soiling from a surface. NOTE: Cleaning may be effected by one or more of the following means: physico-chemical (detergent action); chemical (e.g. sodium hydroxide); biochemical (e.g. enzymes); physical (e.g. shear forces caused by brushing or hosing). Cleaning efficiency is also dependent on the length of time and temperature of application, etc. (2) (ASTM A 380) Cleaning includes all operations necessary for the removal of surface contaminants from metals to ensure maximum corrosion resistance of the metal; prevention of product contamination; and achievement of desired appearance.

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