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Are the 0.04 micron particles used by the N95-COMPANION appropriate for respirator fit testing?

April 26, 2017appropriate fit Micron particles respirator Testing Used

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Are the 0.04 micron particles used by the N95-COMPANION appropriate for respirator fit testing?

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Research has shown that there is no lower limit to the particle size that can be used for quantitative fit testing. There may be an upper limit near 2 microns. For more details, please refer to Application Note ITI-055 Penetration of Ambient Aerosols Through Respirator Face Seal Leaks.