Noise Induced Hearing Loss

What are those favorite sounds that you treasure?

Since being posted on YouTube, Sarah Churman’s video has been viewed over 26,000,000 times. Sarah, born deaf, was 29 years old at the time, a young mother of two that had never heard her...
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Quantifit

Behind the Scenes at Times Square with the OHD Quantifit

Tomorrow night New York City will host one of its largest crowds of the year for the annual New Year's Eve Ball drop. According to this CBS News article over 7000+ New York City Police officers will...
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Quantifit

Software Does not Save Data

This solution will apply only to version 3.0.1 for FitTester 3000 and version 5.0.1 for the Quantifit.If you have the newer Quantifit, it is highly recommended that you upgrade to FitTrack GOLD. Call...
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OHD News

Merry Christmas from your friends at OHD

May the peace and blessings of Christmas be yours!
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Environmental Noise Monitors

What are the latest ways to measure environmental noise?

Environmental noise monitoring has traditionally been limited to main communication methods or manual downloads. These methods required physical presence at the instrument and the ability to access...
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OHD News - Dec 5, 2016

Celebrating Luke Allen’s 10 Anniversary with OHD!

Congratulations Luke on 10 years of service. OHD is truly grateful to have you. Thank you for your wonderful contributions!
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1 min read
Quantifit - Nov 15, 2016

The need to deal with inhalation valves.

In order to achieve the highest level of fit testing, it is important to know the various parts of a respirator and how to prepare that mask for testing. Every mask regardless of type will have some form of valve which...
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2 min read
Quantifit - Nov 2, 2016

“No Shave November” and OSHA’s Stance on Facial Hair

There is a common question I receive from many companies which is not based around technological advantages, accuracy, or even OSHA standards on how to perform mask fit testing. This question comes in the form of, “Do I really...
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2 min read
Quantifit - Aug 1, 2016

Quantifit Annual Calibration FAQs & Service Return

Here are some answers to common questions we receive concerning calibration:How do I initiate the calibration process?1. Complete the enclosed Service Return Form and include a copy with the shipment2. Include payment information...
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Quantifit - Aug 1, 2016

Quantifit: Troubleshooting Survivair SCBA masks

Having problems passing a fit test on the Survivair 20-20, Panther, or Sigma masks? Download our SurvivairTroubleshooting guide.
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