Silica Mist Test for Respiratory Protective Devices,

摘要

The following describes the equipment and test procedure used by the NIOSH Testing and Certification Branch (TCB) to evaluate the effectiveness of respiratory protective devices against mists of silica and other materials having a TLV not less than .05mg/cu m or 2 mppcf. Test requirements for such devices are set forth in the Federal Register,Part 11, Subpart 11.140-7,for maximum allowable penetration,and Subpart 11.140-9for maximum allowable breathing resistances before and after testing.