CMS's electronic microchip-measurement system is currently one of the most accurate and reliable on-site detection systems for the measurement of gas concentrations. It comprises a substance specific microchip and an analyzer which takes measurements and displays the results on a digital screen. With one chip it is possible to take 10 different measurements of a known substance. Each measurement is carried out using the display menu operated by a single switch. Even new users will find its operation easy and trouble-free. 50 individual measurements can be stored in the integral data recorder at any one time.