PM-2 operating principle is based on Gold-Amalgamation / Cold Vapor Atomic Absorption (CVAA). Air sample (either atmospheric air or soil gas) is continuously drawn on the Mercury Collector Tube via a liquid scrubber and dehumidifier. Amalgamated Mercury is later desorbed and measured under UV 253.7nm. All sampling settings and measurement conditions can be easily set through the guide sequence and keypad, making the operating simpler. It is highly sensitive capable of detecting mercury level down to 0.001ng.

PM-2 can also be adapted with a water measurement kit where sample like rain water collected in the field can be collected and analyzed immediately. Simple glassware setup uses stannous chloride reduction to liberate the mercury onto the gold-amalgamation trap inside PM-2. The amalgamated mercury is rapidly desorbed and quantified via CVAA.

PM-2 is equipped with memory for data-storage up to >300 data, which can be down-loaded onto Windows spread-sheets for further tabulations once back to the lab or office. A fully-charged unit allows continuous operation up to 8 hours.