ohd-aerofit

OHD AeroFit Respirator Fit Tester

This advanced Condensation Nuclei Counting (CNC) fit testing device is engineered for precision and ease of use. The AeroFit delivers quick and accurate fit testing for all respirator types, including N95, guaranteeing consistent and reliable results.

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Fast: Complete fit tests in under three minutes.

CNC Technology: Accurate leakage measurement using particle concentration analysis.

Global Standards Compliance: Meets OSHA, ISO, and HSE requirements.

Versatile Compatibility: Works with elastomeric and N95 respirators.


Quick Setup: Streamlined configuration and guided selection.

Standalone Testing: Unlimited onboard data storage, no tablet or computer needed.

Cordless: Rechargeable battery for testing anywhere.

Printing and PDF Generation: Directly from the instrument.


Particle Generation Management: Ensures optimal testing environment.

Interactive Guidance: Step-by-step animations and instructions.

Preloaded Respirator Lists: Auto-pair with correct technology and protocol.

Automated Daily Verification: Smart respirator selection and built-in zero filter.

Optional Cloud Integration: Track compliance seamlessly with OHD’s software.

Silent Operation: Noise-free for a pleasant experience.

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We understand that you have a choice when it comes to choosing your equipment and are dedicated to providing you with the highest quality instrumentation available.Contact us now for your free, no obligation quote and discover why we are the preferred Authorized Distributor and Service Provider to the world’s leading manufacturers.  (Completing our online form does not sign you up for electronic advertising.)

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  • Size: (H) 11 x (W) 4.4 x (D) 15 inches
  • Weight: 8.5 lbs
  • Fit Factor Range: 1 to >10,000 or 1 to 200+ for <99% efficient respirators (e.g., N95)
  • Flow Rate: Sample: 120 cm³/min; Total: 700 cm³/min
  • Fit Factor Measurement: Direct measurement of fit factor = (Cout/Cin)
  • Temperature Range: Operation: 32 to 100°F (0 to 38°C); Storage: -40 to 122°F (-40 to 50°C)
  • Working Fluid: 99.5% reagent grade isopropyl alcohol; Run time per charge: 8 hours at 70°F (21°C)
  • Concentration Range: 0 to 100,000 particles/cm³
  • Particle Size Range: 20 to 1000 nm
  • Calibration: NIST Traceable
  • Input Voltage: 12VDC, Center Positive, 3A Max
  • Power Supply: Universal, 100-240VAC, 50/60Hz, 1A Max
  • Operating Temperature: 5 to 45°C
  • Humidity Range: 20 to 80%, Non-Condensing
  • Setup Memory: 20GB
  • Touchscreen: Capacitive Touch (800 x 480 pixel display)
  • Ports: 4 Type A Ports (Keyboard, USB Memory, Printer); 1 Type B Port (PC Communication)

  • Technical Support: No charge phone support to original owner of instrument
  • PC Requirements: 1 GHz or better; RAM: 1 GB or greater; Port Disc Space: 16GB; Operating System: Windows 10
  • Warranty: Two-year parts and labor