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Even though OSHA first accepted quantitative respirator fit testing (QNFT) methods in the 1980s, only a few companies have produced fit testing instruments that use those methods. Products like AccuTec’s AccuFIT 9000 and TSI’s Portacount are among the only ones on the market today for use by employers in their Respiratory Protection Program. What is […]
Not all companies that use qualitative fit testing as a means to test the fit of respirators may know that the results are not necessarily 100% accurate. Since this is the case, it might be time to look for ways to conduct foolproof respirator fit testing which ensure that the results are reliable and verifiable. […]
Very few people like mandates, but there are many that make sense. For instance, restaurants are required to meet certain standards of cleanliness and sanitation to stay open and functioning. Commercial airline flight crews have to demonstrate proficiency in their ability to fly passenger-carrying aircraft by earning an Airline Transport Pilot rating and a First-Class […]
With the rise of the omicron variant, many States and businesses are enforcing mask mandates. Whether or not you agree with these mandates, the real question is…do they make sense when many masks are ineffective? Based on our experience, we think not. Not All Masks Protect The Wearer Cloth masks do little or nothing to […]
Quantitative respirator fit testing measures how much air leaks into any tight-fitting respirators. Each quantitative fit test is performed by using a machine that calculates measurements with one of two methods: ambient aerosol (CNC) or controlled negative pressure (CNP). For nearly 30 years, there were only two manufacturers capable of performing the OSHA fit test […]
The Qualitative Respirator Fit Test is a method that relies on the ability of the test subject to detect a challenge agent such as Saccharin. It has been in use for decades and predates the evolution of Quantitative Fit Testing methods and equipment. Qualitative testing assumes that if any amount of the challenge agent penetrates […]
There is a lot of misinformation about the way N95 respirators work and in fact what the designation actually means. In order to understand the AAC/CPC method of fit testing, it is really helpful to first understand the filtration mechanisms that occur in the Filtering Facepiece Respirators such as the N95 series. We recently found […]
One of the many important things to know about the particular strain of coronavirus which is the etiological agent of the current pandemic is the length of time the virus can remain infectious when it is in the environment. This exceptionally well written and documented letter was published in the New England journal of Medicine […]
Two Quantitative Fit Testing Methods Respirator fit testing is becoming more important all the time. There are currently two commonly-used methods for performing quantitative fit testing: Condensation Nuclei Counting (CNC) and Controlled Negative Pressure (CNP). So, what’s the difference? CNC Fit Testing By far, the most widely used method is the ambient aerosol method using […]
Hi, I’m Wesley with Accutec-IHS. The AccuFIT9000 is a new instrument for performing respirator fit testing which depends on measuring the fit of a tight fitting respirator by comparing the ratio of the respirable particles in the breathing zone, with the concentration of these ultra-fine particles in the ambient atmosphere. This technology is called condensation […]
