Bldg. 235-2W-70
St. Paul, MN 55144
(800) 328-1667

Advanced Test Equipment Corporation

10401 Roselle St.
San Diego, CA 92121
(800) 404-2832

Advanced Test Equipment Corporation (ATEC) supplies test and measurement equipment to the industrial hygiene industry in need of helium leak detectors, particle counters, sound level meters, thermal imagers, and more. Rely on ATEC to have equipment in stock and available for immediate delivery with friendly and knowledgeable service you can trust.

Council for Accreditation in Occupational Hearing Conservation (CAOHC)

555 E. Well St., Ste. 1100

Milwaukee, WI 53202
(414) 276-5338

Larson Davis

3425 Walden Ave.
Depew, NY 14043
(716) 926-8243

Noise Control Engineering LLC

85 Rangeway Road
Bldg. 2, 2nd Floor
Billerica, MA 01862
(978) 670-5339


2687 John Hawkins Parkway
Hoover, AL 35244
(205) 980-0180
[email protected]

OHD manufacturers two revolutionary respiratory protection devices. The OHD Quantifit performs the fastest, most accurate mask fit test accepted by OSHA, NFPA, and ISO. The OHD QuantiCheck is the first-ever quantitative user seal-check device. OHD also offers a variety of additional health and safety products.


135 Bernice Drive
Bensenville, IL 60106
(866) 736-8347
[email protected]

Treat yourself to better industrial hygiene and safety instrumentation rental service: anywhere in the U.S. and Canada. Complete kits, software included. Fit testing, dust monitoring, noise and sound level monitoring, gas detection, airborne contaminant monitoring, heat stress, combustion efficiency analyzers. Free training videos at raecorents.com.

Shenzhen AfterShokz Co. Ltd.

Floors 1-4, Factory Bldg. 26, ShanCheng
Industrial Park, Shiyan St., Bao’an District
Shenzhen, 518000

SKC Inc.

863 Valley View Road
Eighty Four, PA 15330
(724) 941-9701
[email protected]

SKC sampling solutions and expertise support your critical mission to protect worker health and safety. Our science has served occupational health and safety professionals for over 55 years. That science produces best-in-class sample pumps, media, size-selective samplers, surface and dermal testing kits, noise instruments, and technical support. Science. Serving People.

Zefon International Inc.

5350 SW First Lane
Ocala, FL 34474
(352) 854-8080
[email protected]

From asbestos cassettes to pre-weighed filters, Zefon provides the OEHS professional with the highest quality products in air sampling media. Providing reliable and worry-free sampling media and equipment is our commitment to you and your profession. Zefon is the Professionals’ Choice.