Jonathan McCallum

Market Segment Manager: Occupational Health, Industrial Hygiene & Environmental Monitoring

What is fit testing and why should I care?

November 21st, 2019

Do you wear a respirator for work? Were you fit tested for it? If you haven’t been, you should be! A respirator fit test...

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Jonathan McCallum

Market Segment Manager: Occupational Health, Industrial Hygiene & Environmental Monitoring

Your ultimate cheat sheet for Respirator Fit Testing

February 13th, 2019

We recently published the ultimate cheat sheet for the new CAN/CSA-Z94.4 respiratory protection standards which gives a great high-level look at the Standard’s...

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Jonathan McCallum

Market Segment Manager: Occupational Health, Industrial Hygiene & Environmental Monitoring

How to pass a respirator fit test

May 8th, 2018

The title of this post might seem a bit misleading, but we get asked “how do I pass a respirator fit test?” a...

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Jonathan McCallum

Market Segment Manager: Occupational Health, Industrial Hygiene & Environmental Monitoring

Respirator Fit Testing Tips and Tricks: Basic Trouble Shooting

April 17th, 2018

If you’ve ever performed QNFT (quantitative) respirator fit testing, you know that the process can sometimes be challenging and interspersed with occasional failed...

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