OHD OHD specializes in the instrumentation and software to help protect your employees’ health and manage occupational risks.

OHD is the manufacturer of the QuantiFit2 - the fastest and most accurate fit testing device on the market. Occupational Health Dynamics offers a range of products and services to help you protect your employees and manage your occupational risks. Whether you are looking for The QuantiFit2 Respirator Fit Tester, Noise Dosimeters, Audiometer, Vision Screener, Breath Alcohol Instruments, or a Sound Level Meter, we can provide you with a complete solution.

Managing fit testing shouldn’t feel overwhelming. If compliance tracking, reminders, and reporting are eating up your ti...
01/23/2026

Managing fit testing shouldn’t feel overwhelming. If compliance tracking, reminders, and reporting are eating up your time, you’re not alone.

That’s why we built Logic Cloud: to make fit testing management simple, automated, and stress-free.

Whether you’re managing fit testing for a single team or multiple locations, Logic Cloud gives you the oversight and automation you need to stay ahead with confidence.

✅ Streamline compliance tracking
✅ Stay prepared for audits
✅ Modernize your fit testing program with ease

Stay compliant, stay confident.
Learn more about Logic Cloud: ohdglobal.com/logic-cloud/

It was a pleasure to welcome Till Neumeier, CEO of Dustlight, to OHD headquarters last week. Till spent time with CEO Lu...
01/19/2026

It was a pleasure to welcome Till Neumeier, CEO of Dustlight, to OHD headquarters last week. Till spent time with CEO Luke Allen, National Sales Manager Booth Armstrong, and Director of Marketing Laura Flowers aligning on strategy for 2026, touring the office, and getting a true taste of Alabama BBQ. Thanks to Till for a great visit and even better conversation. 💪

Today, we salute the brave men and women in law enforcement who dedicate their lives to protecting our communities. Your...
01/09/2026

Today, we salute the brave men and women in law enforcement who dedicate their lives to protecting our communities. Your courage and commitment inspire us all, thank you for all you do.

🎄 Merry Christmas from all of us at OHD! Wishing you a safe and happy holiday season. We’ll be closed for the rest of th...
12/24/2025

🎄 Merry Christmas from all of us at OHD! Wishing you a safe and happy holiday season. We’ll be closed for the rest of the week and back to serve you on December 29.

Congratulations to Hunter Chandler, OHD’s 2025 Person of the Year! 🏆 As one of our Technical Support Representatives, Hu...
12/16/2025

Congratulations to Hunter Chandler, OHD’s 2025 Person of the Year! 🏆

As one of our Technical Support Representatives, Hunter consistently goes above and beyond to support our customers and teammates alike. His commitment to doing things the right way, his deep product knowledge, and his willingness to help make a real impact across OHD.

Our CEO, Luke Allen, shared his thoughts on Hunter’s impact: "Hunter is an outstanding example of the OHD Core Values and has been a truly dynamic team member throughout 2025. His self-starting nature, drive, and collaborative spirit consistently elevate the team! I'm grateful for the energy he brings to OHD every day!"

Hunter, thank you for everything you do and for being such a strong reflection of what OHD stands for. This recognition is well deserved!

12/10/2025

Step behind the mask with OHD as we take a closer look at some of the most popular respirators on the market! In this episode of Behind the Mask, OHD's CEO Luke Allen spotlights his favorite features of the JSP Safety Force®10 Full-Face Respirator and the Force®8 Half-Mask, and discusses their fit and feel with Allen Isom, our Inside Sales Manager.

Using the industry-leading QuantiFit2 respirator fit testing device, we walk you through how to properly perform a fit test and share our expert insights on performance, comfort, and usability.

What do we love about JSP Force®10 and Force®8 respirators?

🔹 Thermoplastic Rubber Material
🔹 Multiple Sizes
🔹 Typhoon™ Exhalation Valve
🔹 Compatibility with PressToCheck™ Filters

Check the comments for a link to watch other Behind the Mask videos on other popular respirators!

12/03/2025

If you’ve ever compared CNC and CNP fit test results and wondered why the numbers didn’t match, you’ll want to read this. 👇

In our latest blog, Dr. Stephanie Lynch, CIH, CSP, OHD’s Senior Technology and Research Manager, dives into how your testing method can change what your fit factor really means and why CNP and CNC results can’t be compared one-to-one. She also highlights how not understanding the differences between these methods can lead to false assumptions about respirator performance.

Read her full breakdown: https://ohdglobal.com/cnc-vs-cnp-fit-factor-explanation/

Before the year wraps up, take a minute to check when your respirator fit testing instruments are due for calibration. S...
12/01/2025

Before the year wraps up, take a minute to check when your respirator fit testing instruments are due for calibration. Staying on an annual schedule helps keep your results accurate, your records audit-ready, and your team protected.

If your instruments are due for calibration soon, our prepaid calibration service packages make it easy to lock in pricing, plan ahead, and avoid last-minute downtime.

👉You can compare packages and choose what fits your program by visiting https://ohdglobal.com/calibrations/.

11/24/2025

Not sure which fit testing device is the right choice for your team?

OHD has you covered! Our Find Your Fit page makes it easy to find the right respirator fit testing device for your specific needs. Just answer a few quick questions and we’ll point you to the solution that fits your program best. No guesswork, no wasted time.

Take the quiz now!
🔗ohdglobal.com/find-your-fit/

We were glad to be in Irondale last week for the Alabama AIHA Local Section Fall Conference.Dr. Stephanie Lynch, CIH, CS...
11/17/2025

We were glad to be in Irondale last week for the Alabama AIHA Local Section Fall Conference.

Dr. Stephanie Lynch, CIH, CSP, our Senior Technology & Research Manager, and Mark Gamble, our Southern Regional Sales Manager, spent the day connecting with industrial hygiene professionals and hosting live demos of the AeroFit, QuantiFit2, Svantek noise monitoring instruments, and Gilian air sampling equipment.

A big thank you to everyone who stopped by to chat with us. We appreciate all the conversations and this dedicated industrial hygiene community! 💪

We were honored to be at the AIHA Upper Midwest Local Section PDC, hosted by the American Industrial Hygiene Association...
11/14/2025

We were honored to be at the AIHA Upper Midwest Local Section PDC, hosted by the American Industrial Hygiene Association (AIHA), in C**n Rapids, MN!

Our Mid-American Regional Sales Manager, Kirk Olson, and our National Sales Manager, Booth Armstrong, enjoyed meeting everyone, and were pleased to provide Live Demos and answer questions about all of our solutions.

Thank you to everyone who stopped by our booth. We appreciate all the conversations and the opportunity to support this dedicated industrial hygiene community!

Address

2200 Resource Drive
Hoover, AL
35242

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+12059800180

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Our Story

OHD offers a range of products and services to help you protect your employees and manage your occupational risks. Whether you are looking for The Quantifit Respirator Fit Tester, The QuantiCheck for the world’s first quantitative user seal check, Noise Dosimeters, Audiometers, Vision Screeners, Breath Alcohol Instruments, or a Sound Level Meters, we can provide you with a complete, personalized solution.