Fit-test-Totobobo Mask with TSI Portacount Pro 8038 from fit testing for n95 mask Watch Video
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Description: Testing Totobobo mask with a TSI PortaCount Pro 8038 quantitative fit testing device. nThis is the best OSHA-compliant fit test method. All N95 mask users need to go through a proper fit test in order to be compliant to NIOSH requirement. The best N95 mask won't do anything it it does not fit and seal your face.nTSI PortaCount Pro measure the air inside and outside the mask with an internal particle counter. Fit factor of the mask is determined by a simple ratio:nParticle count outside of mask/