Test methods for filter-type respirator for particles Jurisdiction China Year 1988 Published in Chinese Original/other title [Chinese] Guolushi fangweili kouzhao de shiyan fangfa Source In: Reference Collection of National Occupational Safety and Health Standards 1985-1986, China Standards Publishing Co., Beijing, China, Apr. 1988, p.259-266. Illus. Price: CNY 11.00 (whole volume). Serial number GB 6224.4-86 Descriptors [Primary] China, equipment testing, particulate removing respirators [Secondary] breathing resistance, comment on standard, dead space, filtration efficiency, leakage testing, personal protective equipment, standard Subject category Chemical safety Abstract These standards (effective 1 Dec. 1986) describe the experiments for testing the performance of filter-type particulate removing respirators (dust masks): GB 6224.1-86 describes the testing for total leakage, GB 6224.2-86 that for filtration efficiency, GB 6224.3-86 that for dead space, and GB 6224.4-86 that for breathing resistance. The appended commentary includes explanations on standard GB 6223-86 (standard on filter-type particulate removing respirators) and also the present standards. CIS No. 92-1425 Database ID 58853