Impervious

Impervious Chemical protective clothing is impervious to a chemical substance if the substance causes no chemical or mechanical degradation, permeation, or penetration of the chemical protective clothing under the conditions of, and the duration of, exposure.

Source

40 CFR § 721.3

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Scoping language

The definitions in section 3 of the Act, 15 U.S.C. 2602, and 720.3 of this chapter apply to this part. In addition, the following definitions apply to this part:

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