Fit Test anywhere in under 2 minutes with the QuantiFit2.

The QuantiFit2 performs the fastest, easiest, and most precise respirator fit test on the market, ensuring protection for you and your team.

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QuantiFit2 respirator fit testing instrument

QuantiFit2 Utilizes Patented Controlled Negative Pressure (CNP)

Perform OSHA & ISO Approved Fit Tests

OSHA Compliance

OSHA Compliance

Controlled Negative Pressure (CNP), OHD's patented technology that powers the QuantiFit2, is accepted by OSHA and appears in the Federal Regulations governing fit testing [29 CFR 1910.134].

ISO Compliance

ISO Compliance

Controlled Negative Pressure (CNP), OHD's patented technology that powers the QuantiFit2, is accepted by ISO and appears in the International Regulations governing fit testing [16975-3].

Unlimited Portability

The QuantiFit2 can perform OSHA and ISO approved fit testing in any environment: outside, inside, dirty environments, or clean. No consumables required.

As long as air is present, the QuantiFit2 can perform fit testing. Tests can be performed with no waiting period for smokers or after eating.

Proven Accuracy with CNP Technology

OHD's patented Controlled Negative Pressure (CNP) Technology directly measures respirator leakage, using air as the only challenge agent. No consumables required.

The unit measures the leak rate (in cc/min) by determining the exact amount of air that leaks into the respirator during the fit test.

QuantiFit2 fit test demonstration in warehouse
QuantiFit2 in the field

Lifetime Powertrain Warranty

Our exclusive, industry-first, lifetime powertrain warranty protects the inner workings of the QuantiFit2.

Rechargeable Battery Packs

Optional rechargeable battery packs are available with more than four hours of active run time.

Interactive Troubleshooting

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

AeroFit respirator fit testing instrument

Need to test N95s? The AeroFit has you covered.

AeroFit is engineered to make fit testing easier and faster for all respirators, including disposable N95s and elastomeric respirators.

Test N95s with AeroFit

Interested in getting a QuantiFit2 for your organization?

OHD can do on-site, in-person demonstrations and virtual demonstrations for the QuantiFit2.

Request a Demo

Watch a QuantiFit2 Respirator Fit Test

The QuantiFit2 performs the fastest, easiest, and most precise respirator fit test available, ensuring the best fit and protection for you and your employees.

Mask Adapters Available

MSA
3M
Draeger
Sperian
Avon
3M
North
STS
Intersafe
US Safety
Moldex
Sundstrom
Kemira
Makspol
BLS
Gerson
JSP
Dentec
Clean Space
RSI
Scot Sabre
Miller
ISI
Fenzy
GVS
AO Safety
Corpro

Frequently Asked Questions

Contact Us For An On-Site or Virtual Demo

The OHD demonstration process seeks to provide transparency and leave you feeling prepared to make an informed decision regarding your fit testing needs.