NFPA 1975 is the Standard on Emergency Services Work Clothing Elements. The standard is applicable to nonprimary protective work apparel.
Compliance with the standard requires third-party certification by an ISO 17065 accredited body; this must be accomplished before any product can be labeled to NFPA 1975.
All apparel is tested for thermal stability, seam strength, heat and thermal shrinkage. Optional requirements are present to make claims for flame resistance or odor resistance.