ISO 21256-3:2021

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ISO 21256-3:2021 is an international standard that specifies a test method for evaluating the cleaning performance of fine bubble solutions on hard flooring surfaces. It compares the ability of different cleaning solutions, including other fine bubble solutions, tap water, or commercial cleaners, to remove contaminants from a surface. The method involves measuring the mass of residual contaminant after exposure to the cleaning solutions.