scope:

Describes laboratory test methods that enable a determination of the resistance of materials used in protective clothing to permeation by liquid or gaseous chemical under the conditions of either continuous or intermittent contact. Method A should be used when the test chemical is a liquid that is either volatile or soluble in water and when testing is to be done with the chemical in continuous contact with the protective clothing material. Method B should be used when the test chemical is a gas and when testing is to be done with the chemical in continuous contact with the protective clothing material. Method C should be used when the test chemical is a liquid, that is either volatile or soluble in water, or a gas; and when testing is to be done with the chemical in intermittent contact with the protective clothing material. These test methods are only suitable for testing air-impermeable protective clothing materials. They assess the permeation resistance of the protective clothing material under laboratory conditions in terms of breakthrough time, permeation rate, and cumulative permeation. These test methods also enable observations to be made of the effects of the test liquid on the protective clothing material under test.