The SAM-I MAX and SAM-IV MAX Specific Air Monitors are continuous systems that use infrared technology to measure the concentration levels of organic compounds in ambient air in HCFCs, HCCs, HFCs, and other refrigerants. The monitor's optical design allows it to be compound specific.

Concentration is measured in parts per million and indicated on the monitor's front panel LCD. The LCD also has a an arrow that appears next to the sample point being sampled.