Vasthi instruments are global leaders in manufacturing of aaqms (ambient air quality monitoring system) for continuous monitoring of pollutant gases (no2, so2, o3, co) and suspended particulate matter pm10 and pm2.5 monitors, zero air generator, dynamic dilution calibrator in india and have been supplying instruments to customers worldwide, our multidisciplinary team of scientists, physicians, engineers, and regulatory consultants with decades of global experience brings you the quintessential mechanism that provides complete safety accuracy and durability.