1.1 This test method measures the resistance of protective clothing materials to permeation by liquid or gaseous chemicals under the condition of continuous contact. 1.1.1 Procedure A -For use when the test chemical is a liquid that is either volatile or soluble in water. 1.1.2 Procedure B -For use when the test chemical is a gas. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of th