Welcome to Apex Instruments, Inc., your solution for source sampling equipment. We have been a world leader in the manufacture and development of emission measurement sampling equipment since 1988. We carry a full line of equipment and supplies for the measurement of particulate and gaseous pollutants from stationary sources.


Contact Apex Instruments today to see how we can be of service to you for your stack testing equipment needs with quality, innovation, and competitive prices.

Calibration being performed with Wet Test Meter

Apex services include:
Calibration | On-site Repair and Support | Training for Apex Equipment | System Integration | Custom Mobile Emissions Lab

Technical Support:
Customer Service:
Please call a customer service representative at 800-882-3214

Domestic Sales:
International Sales:

Please contact Bo Pritchard for more information on Apex Instruments custom Mobile Labs at:
Phone: (919) 557-7300 / Extension: 5742

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Select this link to download Product Software
Select this link to download Product Manuals
Select this link to download Product Literature (Catalog, Brochures, Flyers and Packing Lists)