Vasthi Instruments manufactures best-in-class Continuous Ambient Air Quality Monitoring Systems (CAAQMS) in India. Accurately monitors toxic gases like SO2, Nox, O3, CO, PM 10 and 2.5.CAAQMS stands for Continuous Ambient Air Quality Monitoring System. It is a system designed to continuously monitor and measure various air quality parameters in the ambient air. These parameters typically include pollutants such as particulate matter (PM10 and PM2.5), nitrogen dioxide (NO2), sulfur dioxide (SO2), carbon monoxide (CO), ozone (O3), and others.