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The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Silica Dust Test for Respiratory Protective Devices.

PB278019

Publication Date	1977
Personal Author	Myers, W. R.
Page Count	40
Abstract	The silica dust test evaluates the performance of air-purifying respirators against dusts of materials having a TWA not less than 0.05 mg/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 .05 mg/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 30 Part 11 of the Code of Federal Regulations, Subparts 11.140-4 and 11.162-7 for maximum allowable penetration and in Subparts 11.130-9, 11.140-12, 11.162-1, and 11.183-4 for maximum allowable breathing resistances.
Keywords	Respirators Breathing apparatus Silicon dioxide Dust Filters Performance tests Performance standards Pesticides Particles Industrial hygiene Regulations National government Occupational safety and health Protective equipment Threshold limit values Maximum permissible exposure level Particle size
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	95D - Human Factors Engineering 57U - Public Health & Industrial Medicine 94H - Industrial Safety Engineering
Corporate Authors	National Inst. for Occupational Safety and Health, Morgantown, W. Va. Testing and Certification Branch.
Document Type	Technical Report
Title Note	Respirator procedure rept.
NTIS Issue Number	197812

Silica Dust Test for Respiratory Protective Devices.

Silica Dust Test for Respiratory Protective Devices.
PB278019

Publication Date	1977
Personal Author	Myers, W. R.
Page Count	40
Abstract	The silica dust test evaluates the performance of air-purifying respirators against dusts of materials having a TWA not less than 0.05 mg/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 .05 mg/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 30 Part 11 of the Code of Federal Regulations, Subparts 11.140-4 and 11.162-7 for maximum allowable penetration and in Subparts 11.130-9, 11.140-12, 11.162-1, and 11.183-4 for maximum allowable breathing resistances.
Keywords	Respirators Breathing apparatus Silicon dioxide Dust Filters Performance tests Performance standards Pesticides Particles Industrial hygiene Regulations National government Occupational safety and health Protective equipment Threshold limit values Maximum permissible exposure level Particle size
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	95D - Human Factors Engineering 57U - Public Health & Industrial Medicine 94H - Industrial Safety Engineering
Corporate Authors	National Inst. for Occupational Safety and Health, Morgantown, W. Va. Testing and Certification Branch.
Document Type	Technical Report
Title Note	Respirator procedure rept.
NTIS Issue Number	197812