• T640-PM web
  • GT5000 Gasmet logo
  • T500U CAPS NO2 web
  • T100U SO2 web
  • Gasmet black-2
  • opsis DOAS
  • Lephalale

In accordance with our supplier selection philosophy, we decided on the following suppliers of ambient air quality monitoring equipment. Please click the various images to view more detailed information on the equipment.


Operating out of Furulund in Sweden, Opsis AB develops and manufactures state of the art systems for gas analysis and process control. Opsis have several international distributors, and we at C & M are proud to have been appointed the sole Southern African distributor for Opsis AB.

Opsis has a reputation for high quality and have as a result received ISO 9001 and ISO 14001 certification. In addition, Opsis has been recognised as an accredited calibration laboratory by SWEDAC, in compliance with ISO 17025. All Opsis products also carry CE certification.



With offices located in Englewood, Colorado and Gibsonia Philadelphia, Teledyne Monitor Labs (TML) develops and manufactures environmental monitoring instrumentation for the detection, measurement, and reporting of air pollutants.

With over 30 years of experience TML has vast experience in the manufacturing of in-situ systems, both standard and dilution extractive. TML also manufactures in-situ flow, particulate and opacity systems used by C & M in CEM applications.



With over 50 years of experience, Teledyne's product line includes electrochemical sensors, analysers, and custom systems which combine expertise in electronics, chemistry and engineering. TAI provides scientific solutions for chemical analysis problems.



Operating out of Knoxville, Tennessee, and founded in 1989 in Toronto, Canada, Tekran is the world's leading manufacturer of advanced systems for ambient and point-source continuous mercury monitoring.