Vasthi Instruments is the leading manufacturer of NOx analyzers (CAAQMS) in India. The analyzer uses the chemiluminescence detection principle for accurate monitoring of NOx levels in the air.We Are providining best An Ambient NOx Gas Analyzer is a device designed to measure the concentration of nitrogen oxides (NOx) in the ambient air. NOx is a collective term for nitrogen dioxide (NO2) and nitrogen monoxide (NO), which are pollutants emitted from various sources, including vehicles, industrial processes, and combustion of fossil fuels. Call now us : 7382708685