Quantifit

Volcano on Hawaii Erupts with Life-Threatening Gases

You never know where you might be and what you might be doing when you need a tight fitting mask that has a proper seal. That is where the people on the Island of Hawaii found themselves last...
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Quantifit

TSI to Discontinue Calibration Services for certain PortaCount® Models

Have you been waiting for the right time to upgrade your fit tester from the TSI PortaCount® to the revolutionary OHD Quantifit®? Aren't you tired of the inconvenience of sometimes having to...
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OSHA

Respiratory Mask Fit Testing with Facial Hair

The OHD Quantifit: ohdusa.com/products/quantifit
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