PART 1: Terminology and Performance Requirements for Chemical Risks:
The chemicals break through the glove material at a molecular level. The breakthrough time is here evaluated and the glove must withstand a breakthrough time of at least:
Type A - High protection, with a permeation resistance of at least 30 minutes for at least 6 test chemicals.
Type B - Medium protection, with a permeation resistance of at least 30 minutes for al least 3 test chemicals.
Type C - Basic protection, with a permeation resistance of at least 10 minutes for at least 1 test chemical.