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Evaluation of Alternative Samplers for Bioaerosols. Phase 1. Physical Sampling Efficiency.

PB92161918

Publication Date	1991
Personal Author	Martinez, K. F.; Todd, W. F.; Fischbach, T. J.
Page Count	62
Abstract	The sampling efficiencies of the Biotest centrifugal sampler, the SAS surface air sampler, the Andersen two stage sampler, and the Andersen single stage sampler with the membrane filter sampler were compared for use in assessing potential exposures to microorganisms in biotechnology based production facilities. Each sampler was challenged with a microbial surrogate aerosol under controlled conditions in a horizontal chamber designed for the study of aerosol samplers. The findings indicated that the Andersen two stage sampler differed from the other samplers except for the reference sampler, the filter cassette, in terms of the level of measurement on the average and by particle size level. The Andersen single stage sampler under sampled the reference sampler by -47%. The Biotest and the SAS sampler both under sampled the reference sampler by -81% and -57%, respectively. There was not a statistical difference among particle size ranges for the bias of the Biotest sampler. However, there was a statistical difference among particle size ranges for the bias of the SAS sampler.
Keywords	Air samplers Biological aerosols Performance evaluation Industrial hygiene Particle size distribution Biotechnology Laboratory tests Tracer studies Air pollution monitoring Air pollution control Biotechnology industry
Source Agency	Environmental Protection Agency General National Institute for Occupational Safety and Health
NTIS Subject Category	68A - Air Pollution & Control 57U - Public Health & Industrial Medicine 94D - Job Environment 95 - Biomedical Technology & Human Factors Engineering
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Engineering Control Technology Branch. Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Supplemental Notes	See also PB92-136183. Prepared in cooperation with Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Document Type	Technical Report
NTIS Issue Number	199212

Evaluation of Alternative Samplers for Bioaerosols. Phase 1. Physical Sampling Efficiency.

Evaluation of Alternative Samplers for Bioaerosols. Phase 1. Physical Sampling Efficiency.
PB92161918

Publication Date	1991
Personal Author	Martinez, K. F.; Todd, W. F.; Fischbach, T. J.
Page Count	62
Abstract	The sampling efficiencies of the Biotest centrifugal sampler, the SAS surface air sampler, the Andersen two stage sampler, and the Andersen single stage sampler with the membrane filter sampler were compared for use in assessing potential exposures to microorganisms in biotechnology based production facilities. Each sampler was challenged with a microbial surrogate aerosol under controlled conditions in a horizontal chamber designed for the study of aerosol samplers. The findings indicated that the Andersen two stage sampler differed from the other samplers except for the reference sampler, the filter cassette, in terms of the level of measurement on the average and by particle size level. The Andersen single stage sampler under sampled the reference sampler by -47%. The Biotest and the SAS sampler both under sampled the reference sampler by -81% and -57%, respectively. There was not a statistical difference among particle size ranges for the bias of the Biotest sampler. However, there was a statistical difference among particle size ranges for the bias of the SAS sampler.
Keywords	Air samplers Biological aerosols Performance evaluation Industrial hygiene Particle size distribution Biotechnology Laboratory tests Tracer studies Air pollution monitoring Air pollution control Biotechnology industry
Source Agency	Environmental Protection Agency General National Institute for Occupational Safety and Health
NTIS Subject Category	68A - Air Pollution & Control 57U - Public Health & Industrial Medicine 94D - Job Environment 95 - Biomedical Technology & Human Factors Engineering
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Engineering Control Technology Branch. Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Supplemental Notes	See also PB92-136183. Prepared in cooperation with Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Document Type	Technical Report
NTIS Issue Number	199212