Manufacturer of source and ambient particulate samplers, industry standard particle sizing impactors, EPA reference method PM2.5 and PM10 monitors and continuous mass monitors.

Environmental monitoring instrumentation for gases, particulates and meteorological parameters. Offers environmental instrument rental, environmental software, systems operation, service and maintenance.

Global supplier specializing in the design, manufacture, and supply of gas and particulate ambient-air and stack emission instrumentation, and water monitoring equipment and systems.

Manufacturer and supplier of CEMS, ambient, and process gas instrumentation.

Manufacturer of analytical instrumentation for measurement of trace-level volatile and semi-volatile organic chemicals (VOCs and SVOCs) in samples.

Designer and manufacturer of a line of meteorological and particulate monitoring instruments.

Manufacturer and distributor of air sampling filters and related equipment for industrial hygiene, safety, environmental and indoor air quality applications.

Designs and manufactures products for meteorological and environmental applications and air pollution monitoring, based on advanced Lidar techniques.

Manufacturer of air sampling equipment for the industrial hygiene, safety, environmental and occupational health markets. Sample pumps, constant flow samplers, calibrators, gas sample bags, and VOC-sampling canisters.

Developer of gas analyzers and complete systems for environmental monitoring, ambient air, vehicle exhaust and stack gas emissions.