We've just introduced the Picarro G2207-i gas concentration and isotope analyzer for atmospheric applications including oxygen monitoring to identify the biogeochemical process involved in the carbon cycle. The analyzer combines high precision and low drift O₂ concentration measurement with δ¹⁸O analysis in ambient air.

The G2207-i analyzer incorporates two measurement modes: O₂ concentration only and δ¹⁸O plus O₂ concentration. O₂ only mode provides the highest performance of the ambient concentration: 2 parts-per-million (ppm) at a 5-minute average. Maximum drift is 6 ppm peak-to-peak (P-P) at standard temperature and pressure (STP) over 24 hours. The analyzer also measures water vapor concentration to compensate and correct for dilution. It reports O₂ concentration in dry-mole fraction.