About Us


Apex Instruments was established in 1988 as an American-owned company with a worldwide impact. For more than 25 years, Apex Instruments has manufactured equipment for sampling emissions from industrial chimneys and smokestacks using U.S. EPA guidelines. Our equipment is designed by a staff of experienced stack testers who understand your compliance testing needs.

Apex provides testing consoles, probes, pitots, umbilicals, glassware, filters, and much more. We are innovators in engineering equipment that is versatile and easy to use and can design and fabricate customized equipment for isokinetic gas and particulate sampling.

We have always been directly involved with the environmental industry, working close with the U.S. EPA. When the Clean Air Act was established in 1990 and hazardous air pollutants were identified for control, Apex Instruments was at the forefront of product design, method evaluation and implementation.

With over 12,000 parts and products in inventory, Apex Instruments is recognized as a market and thought leader in the industry. Our focus today, as it was over 35 years ago, is customer service and satisfaction.


Apex Instruments moved to its current 39,000 square foot manufacturing facility in 2005. Today the Company sells equipment into 80+ countries on six continents and operates from its four-building campus.

Apex Instruments facilities - 12,000 square foot manufacturing facilities in North Carolina, USA