Skip to main content

Measures O2 Gas Concentration and δ18O Isotopes

This product has been discontinued. Please refer to our Discontinued Products for information on replacement analyzers.

The Picarro G2207-i gas concentration and isotope analyzer combines high precision and low drift O2 concentration measurement with δ18O analysis in ambient air. This makes it ideal for challenging applications including atmospheric oxygen monitoring to identify the biogeochemical process involved in the carbon cycle.

  • Measures atmospheric O2 gas concentration and δ18O
  • Two measurement modes: O2 concentration only and δ18O plus O2 concentration
  • <2 parts-per-million (ppm) precision in O2 concentration mode
  • Maximum drift is 6 ppm peak-to-peak at standard temperature and pressure
  • Includes water measurement and correction

The G2207-i 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. Patented Picarro cavity ring-down spectroscopy (CRDS) technology enables an effective measurement path length of up to 20 kilometers in a compact cavity, which results in exceptional precision and sensitivity with a small-footprint analyzer. A meticulously designed small optical cavity incorporates precise temperature and pressure control. As a result, the analyzer delivers a best-in-class combination of precision, accuracy, low drift and ease-of-use.

Related Literature