This webinar, hosted by RAECO Rents and presented by Booth Armstrong of OHD Inc., provides a comprehensive demonstration of quantitative respirator fit testing using two primary technologies: Controlled Negative Pressure (CNP) and Condensation Nuclei Counting (CNC).
Key Webinar Highlights
1. Why Fit Test? [03:15]
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Health & Safety: Poor fit is the leading cause of respiratory protection failure.
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Compliance: OSHA (1910.134 Appendix A) and CSA (Canada) require annual testing.
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Frequency: Testing must occur upon initial selection, annually, or if the user experiences significant facial changes (e.g., ±20 lbs weight change or dental work) [08:07].
2. AeroFit (CNC) Deep Dive [15:16]
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How it works: It compares the ratio of particles outside the mask to those inside. It is the preferred choice for organizations testing N95 (FFR) respirators [20:06].
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Testing Environment: It requires an ultrasonic humidifier (included) to create a consistent "challenge agent" of water mist [16:40].
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Silent Operation: Unlike some competitors, the AeroFit operates silently, making it ideal for clinical or medical settings [01:04:25].
3. QuantiFit2 (CNP) Deep Dive [11:44]
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How it works: It uses air as the challenge agent by creating a vacuum (negative pressure) inside the mask. It measures the physical volume of air leaking in [12:03].
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Efficiency: Because it doesn't use particles, you don't need to worry about test subjects smoking or eating before the test, and there are no expensive consumables [22:30].
4. Data Management & Compliance [01:05:33]
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Standalone: Both units can store thousands of records internally and export them via USB as PDFs or CSVs.
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Cloud/PC Software: Advanced data management allows for automatic notifications when an employee's annual test is coming due [01:07:45].
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Protocols: The AeroFit includes a preloaded database of over 2,000 respirators, automatically pairing the mask with the correct OSHA protocol to eliminate guesswork [01:02:43].
Live Demonstrations
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QuantiFit2 Demo [41:53]: Booth demonstrates the 5-step test. The user must hold their breath for 8 seconds per step while the machine measures the seal [45:37].
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AeroFit Demo [53:18]: Booth shows the 4-step CNC test on an N95 mask, involving bending over, talking (Rainbow Passage), and head movements [54:11].