Silica Dust Test for Respiratory Protective Devices.

摘要

The silica dust test evaluates the performance of air-purifying respirators against dusts of materials having a TWA not less than 0.05mg/cu m or 2 mppcf. This test also evaluates the resistance performance of pesticide respirators and filters to be used against materials having a TWA less than .05mg/cu m or 2 mppcf. The dust test procedure is designed to determine whether a respirator meets the test performance requirements set forth in Title 30Part 11of the Code of Federal Regulations, Subparts 11.140-4and 11.162-7for maximum allowable penetration and in Subparts 11.130-9, 11.140-12, 11.162-1,and 11.183-4for maximum allowable breathing resistances.