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Basic Guidelines On Criteria For Respirator Fit Testing

The Requirements In This Appendix Apply To All OSHA-accepted Fit Test Methods, Both QLFT And QNFT. 1.

A. 14. of this appendix. 7 After the test exercises, the test subject shall be questioned by the test conductor regarding the comfort of menafn the respirator upon completion of the protocol. Aerosol generation, dilution, and measurement systems using particulates corn oil, polyethylene glycol 400 pegs 400, di-2-ethyl hexyl sebacate debs or sodium chloride as test aerosols shall be used for quantitative fit testing. 2 Test chamber. A minimum of 10 squeezes is required. 8 After generating the aerosol, the test subject shall be instructed to perform the exercises in section I. A test report prepared by an independent government research laboratory e.g., Lawrence Livermore National Laboratory, Laos Alamos National Laboratory, the National Institute for Standards and Technology stating that the laboratory has tested the protocol and had found it to be accurate and reliable; or 2. Note: N95 and N100 masks can be fit tested using Bitrex with a tent. 

Questions To Ask What Is The Next Step In The Process?This Is The Essential Last Question And One You Should Definitely Ask.

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The Pass or Fail message will indicate whether or not the test was successful. With pressure held constant, air flow out of the respirator is equal to air flow into the respirator. The test subject shall conduct a user seal check, either the negative and positive pressure seal checks described in Appendix B-1 of this section or those recommended by the respirator manufacturer which provide equivalent protection to the procedures in Appendix B-1. The respirator used in the test is equipped with P100 EPA filters that prevent the ambient particles from passing into the respirator.

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