Provides a barrier to larger amounts of fluid penetration through splatter and more fluid exposure through soaking than level 2'Two tests are conducted to test barrier protection preformance.
1. Water Impacting the surface of the gown material
2. Pressuring the material
The ANSI/AAMI PB70 standard included four standard tests to evaluate the barrier effectiveness of surgical gowns. Based on the results of these standardized tests, four levels of barrier performance are defined, with level 1 being the lowest level of protection, and level 4 being the highest.