Level 1 Gowns and Drapes

Describes surgical gowns, other protective apparel, surgical drapes and drape accessories that demonstrate the ability to resist liquid penetration in a laboratory test, AATCC 42 (Water resistance: Impact penetration test).

Level 2 Gowns and Drapes

Describes surgical gowns, other protective apparel, surgical drapes and drape accessories that demonstrate the ability to resist liquid penetration in two laboratory tests, AATCC 42 (Water resistance: Impact penetration test) and AATCC 127 (Water resistance: Hydrostatic pressure test).

Level 3 Gowns and Drapes

Describes surgical gowns, other protective apparel, surgical drapes and drape accessories that demonstrate the ability to resist liquid penetration in two laboratory tests, AATCC 42 (Water resistance: Impact penetration test) and AATCC 127 (Water resistance: Hydrostatic pressure test). For Level 3, the test criterion for AATCC 127 performance is set at a higher value than for Level 2.

Level 4 Gowns

Describes surgical gowns and protective apparel that demonstrate the ability to resist liquid and viral penetration in a laboratory test, ASTM F1671 (Standard test method for resistance of materials used in protective clothing to penetration by blood-borne pathogens using Phi-X174 bacteriophage penetration as a test system).

Level 4 Drapes

Describes surgical drapes and drape accessories that demonstrate the ability to resist liquid penetration in a laboratory test, ASTM F1670 (Standard test method for resistance of materials used in protective clothing to penetration by synthetic blood).