ASTM F903 - 18 - Standard Test Method for Resistance of Materials Used in Protective Clothing to Penetration by Liquids

Significance and Use: This test method is normally used to evaluate the barrier effectiveness against penetration of liquids through materials, seams, closures, or other planar assemblies used in protective clothing and specimens from finished items of protective clothing. Finished items of protective clothing include gloves, arm protectors, aprons, coveralls, suits, hoods, boots, and similar items.
Scope: This test method is used to test specimens of protective clothing materials, assemblies such as seams and closures, or interfaces used in the construction of protective clothing. The resistance to visible penetration of the test liquid is determined with the liquid in continuous contact with the normally outside (exterior) surface of the test specimen.

Source: https://www.astm.org/Standards/F903.htm

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