ASTM F1407 - 12(2017) - Standard Test Method for Resistance of Chemical Protective Clothing Materials to Liquid Permeation

Permeation Cup Method
This test method establishes a standard procedure for rapidly (in 1 h or less) determining the chemical resistance of specimens of protective clothing materials. This test method can be used to rank materials as to their suitability for use with liquids of known or unknown composition.
The breakthrough detection time, permeation rate, or cumulative permeation can be used to identify protective clothing materials that are more likely to limit potential exposures to chemicals. Longer breakthrough detection times and lower cumulative amounts permeated and permeation rates are characteristics of materials that are better barriers to the test chemical.

Source: https://www.astm.org/Standards/F1407.htm

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