Environmental Sensors Co. offers a complete line of analytical instruments for toxic chemical vapor detection and monitoring. ESC gas monitors are designed to monitor indoor air quality where varying amounts of the targeted gas are expected to be present. ESC gas monitors are often used for personal or area monitoring to protect employees` safety. All of ESC gas monitors meet or exceed OSHA accuracy requirements. Our IAQ monitors are very useful to check Indoor Air Quality of the workplace, homes, and offices. IAQ professionals can find the real time concentration on site.