Ecotech presents the latest addition to the Serinus range: The Serinus 60 NO₂ analyser with Cavity Attenuated Phase Shift (CAPS) spectroscopy technology. This technology allows direct measurement of nitrogen dioxide (NO₂), rather than an indirect calculation from a chemiluminescence analyser. Using a modulated blue LED light source, the detector measures the phase shift attributable to the level of NO₂ in the measurement cell over an average path length of several kilometres.