CNP Fit Testing Finally Arrives in the UK

17 Jan 2018

Introducing the Quantifit Respirator Fit Tester, the industry breakthrough in portable mask-fit technology from OHD which uses Controlled Negative Pressure (CNP) instead of traditional aerosol particle counting. 

Its simpler testing technology means it can test after a 30-second daily calibration in virtually any environment as long as air is present and there is a power supply, a unique benefit over its competitors. It is already used by emergency services and first responders across the world and is suitable for any industry where respirator fit testing is applicable.

Quantifit is truly innovative in terms of introducing simpler and faster technology to UK fit testing. Traditional aerosol products count particles to measure gas, vapour and particulate. If there are not enough particles in the air to test, the user has to light candles or incense or generate salt fog to create the particles needed to complete the test.

Exclusively available from Shawcity in the UK, Quantifit is revolutionary as it doesn’t count particles but uses controlled negative pressure with air as the challenge agent. Aerosol tests have to generate gases, vapours or particles to be able to perform a particle count. It quickly and safely demonstrates that if air can get into the respirator then gases, vapours and particles could too.

So how does Quantifit work? During a fit test, the respirator inlets are capped with test adapters and the inhalation valves are propped open or removed from the mask. With the test subject holding their breath for no more than ten seconds, the Quantifit then establishes and maintains a slight vacuum, or controlled negative pressure, inside the mask. Since the respirator inlets are sealed, all sources of leakage into the mask are through the face-to-facepiece seal or due to integrity issues. The volume of air drawn out of the mask by the Quantifit during this short period of time is equal to the leak rate into the mask through the face-to-facepiece seal.

The Quantifit seal check feature is also unique to CNP technology. This feature can be used to verify that the facepiece is seated prior to testing. Just as importantly, it will create a negative pressure that can detect a leak path when a face piece needs repair, similar to mask integrity testing that is done within nuclear and military settings.

Another real-world benefit Quantifit offers is no waiting time to test those who have recently eaten or smoked. If using the traditional aerosol count method, a user who has just eaten or smoked has to wait 45 minutes after their food or cigarette before they can take a fit test isn’t affected by particle contamination so any user can be tested at any time, regardless of these factors.

Fit is measured by simulating movements approximating real life and the easy-to-use, simple operation means many users self-test once trained. Offering very quiet operational noise, Quantifit is a standalone unit weighing less than 3.5kg. It also stores up to 500 fit tests on the unit and can retain this data without power for two years.

Quantifit’s FitTrack Gold software allows users to print wallet-sized fit test cards on any standard, Windows-based printer, with a dedicated card printer available as an option, whereas the market leading aerosol product only operates with a special printer, adding up to 30% to the purchase price if this function is required.

Virtually maintenance free, Quantifit has no messy wicks which normally changes twice a day. A simple one-minute daily calibration ensures it is working within a strict tolerance.

Further advantages of Quantifit include the fact it has no internal optics, which can become contaminated. Sometimes this contamination, which is specific to aerosol technology, means the unit must be sent back to the manufacturer for cleaning. With no need for consumables, Quantifit also offers the best value for money in terms of ongoing cost of ownership

91-92 Shrivenham Hundred Business Park
SN6 8TY
Swindon, Oxfordshire
United Kingdom

See Shawcity Limited at Safety & Health Expo 2019

Shawcity Limited will be exhibiting on Stand SH2675 at Safety & Health Expo 2019, 18-20 June, ExCeL, London, UK

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