QuantiFit2 Respirator Fit Tester

Fit Test Anytime, Anywhere with the Portable QuanitiFit2 Controlled Negative Pressure Respirator Fit Tester


Break free from traditional respirator fit testing restraints with the QuantiFit2 Respirator Fit Tester, utilising OHD’s scientifically proven and patented Controlled Negative Pressure Technology, a methodology also covered as part of the RESP-FIT training and accreditation program.

The QuantiFit2 offers battery power for ultimate portability, AutoStart functionality for touchless testing, and Bluetooth capability to test from across a fire bay, outdoors or another room entirely. Colour animations guide the user through each fit test exercise so that there is no guess work and very little is needed to instruct the employee being tested.

With no instrument warm up period to worry about, no consumables required, a simple to navigate colour touch screen display and a one-minute daily calibration to ensure that the QuantiFit2 is working within a strict tolerance, the QuantiFit2 is simple to use whilst advancing respirator fit testing to new heights.

Choose the unrivalled technology of the OHD QuantiFit2 Fit Tester to test “Anytime – Anywhere!”

Contact your local Air-Met Scientific office for more information or to arrange a demo.

OHD QuantiFit2 Fit Tester Features & Benefits

Proven Accuracy

The OHD QuantiFit2 is a highly specialised instrument which utilises scientifically proven and patented Controlled Negative Pressure (CNP) technology to directly measure respirator leakage using only air. CNP performs the most accurate fit test available and is a methodology also covered as part of the RESP-FIT Fit Testing Training and Accreditation Program.

Test Anywhere

With patented CNP technology, QuantiFit2 users can perform fit testing in any environment: outside, inside, dirty environments or clean. As long as air is present, the QuantiFit2 can perform fit testing.

No Consumables or Probing

Unlike older technologies that require particles, wicks, and alcohol solutions, the QuantiFit2 simply needs air for testing. By using air, it increases your ability to test, eliminates the requirement to tediously probe the respirator and removes the ongoing cost of replacing fit testing consumables.

Battery Power

Rechargeable battery packs are available with more than four hours of active run time. With no requirements for test environment, no use of consumables and the portability of the QuantiFi 2, users are free to choose where to work, without the need to be tethered to an outlet.

Fastest Fit Test

With the OSHA and ISO approved CNP REDON respirator fit test protocol, a test can be performed in as little as two minutes with no waiting period for smokers or after eating as required with older fit test methods.

Ease of Use

The QuantiFit2 takes users through the protocol step-by-step so that there is no guess work and very little time is needed to provide instruction. There is no instrument warm up period and only a one-minute daily verification require to ensures that the QuantiFit2 is working within a strict tolerance.

Direct Measurement of Leak

The unit precisely measures leak rate (in cc/min) by determining the exact amount of air that leaks into the respirator during the fit test. Other test methods infer leak, while CNP is the only system that directly measures the leak.

OHD Logic

Revolutionary new software and Bluetooth connectivity allows users to run countless machines simultaneously (as many machines as you are capable of overseeing) with flexibility on the start time for any test.


The QuantiFit2 automatically senses when the user has initiated a breath hold and begins the test exercise. This allows for touchless testing and even easier operation. Seamlessly move from one test exercise to the next.

Interactive Troubleshooting

Each test exercise graph is captured for review, which allows users to compare results to example support graphs.

Color Touch Screen Display

Animated instructions guide users through an interactive test experience. Menus are easily navigated with a simple touch.

Multiple Donnings

CNP is the only fit testing technology in the world that uses multiple donnings within the fit test protocol. Multiple donnings ensure that users know how to consistently don the respirator correctly.

OHD QuantiFit2 Fit Tester Specifications

OVERVIEW Calibration NIST Traceable
Input Voltage 12VDC, Centre Positive, 3A Max

Power Supply Universal, 100-240VAC, 50/60Hz 1A Max
Operating Temperature 5 to 45C
Humidity Range 20 to 80% Non-Condensing
Setup Memory 20GB

Dimension 28cm (H) x 11cm (W) x 38cm (D)
Weight 3.9kg
Touchscreen Capacitive Touch (800x480 pixel display)
Connectivity 4 Type A Ports, 1 Type B Port
DYNAMIC RANGE Leak Test Measurement 2-5000 cc/min
Resolution 0.1 cc/min
Fit Factor Computation 6-53,000
Resolution 1

OHD QuantiFit2 Fit Tester Applications

The QuantiFit2 is ideal for fit testing of non-disposable respirators and masks. 

OHD QuantiFit2 Fit Tester Support Documents