Vasthi Instruments designed faultless dew point measurement instruments with a measuring range of -100C to 30C. Our dew point meters comply with parameters set by the International Organization for Standardization (ISO).CAAQMS typically consists of a network of monitoring stations strategically located throughout urban and industrial areas, as well as in rural regions. These stations use various sensors and analytical instruments to measure the concentration of different air pollutants continuously. The data collected is usually made available to the public through websites, apps, or other means to help individuals make informed decisions and take precautions when air quality is poor. contact us : 7670887909,6302677968