This standard establishes minimum performance classification and labeling requirements for protective clothing designed to provide protection against chemical hazards. Items covered by this standard include, but may not be limited to, totally encapsulating suits, splash suits, coveralls, jackets, pants, aprons, smocks, hoods, sleeves, and shoe and boot covers. To assist end-users, this document provides descriptions of referenced test methods, guidelines for conducting hazard and risk assessments, and suggested performance levels for certain applications.