Respirator Fit Testers

OHD Quantifit

The OHD Quantifit® provides an extremely accurate, OSHA and NFPA
compliant mask fit test in 2-3 minutes and allows testing in any environment
with no consumables using our patented Controlled Negative Pressure
Technology. CNP Technology directly measures respirator leakage, using only
air as the challenge agent. The Quantifit® precisely measures the mask leak
rate by determining the amount of air that leaks into the respirator during the
fit test. Test your mask; test with confidence.

Get In Touch

Need help finding a product or run into an issue on our site? Contact us directly at (800) 328-6709 or send us a message!

Contact Info

Our Offices

Minneapolis: 12302 Princeton Avenue Savage, MN 55378
Omaha: 3611 South 149th Street Omaha, NE 68144

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Open Office Hours

M-F: 8am - 5pm
S-S: Closed

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Contact Us

Minneapolis Offices:
(800) 328-6709 or (952) 808-0320
Omaha Offices:
(800) 899-7866 or (402) 572-7866

COVID-19 Update

We are monitoring the situation and development of the coronavirus outbreak closely. Currently this means that Midwest Special Instruments has setup procedures for operating our business and at the same time minimizing infection and spreading of the coronavirus. MSI’s guidance to team members is aligned with the guidance of local and national health authorities; in some cases, we are even more cautious. We constantly update our policy to reflect any changes in guidance from authorities.

Our first priority is everyone’s health. We are doing our best to ensure our service is maintained as much as possible given the circumstances. We are taking all possible actions to ensure reliable service and deliveries. As of now, there is no slowdown in order fulfilment or device repair and calibration services.

We greatly appreciate your loyalty to Midwest Special Instruments. We are keenly aware that this outbreak affects not only your business with MSI but your daily life and that of your family, customers and staff.  Please stay safe and know that our thoughts are with you during this difficult time.