The Picarro G2301 gas concentration analyzer provides simultaneous, precise measurement of carbon dioxide (CO₂), methane (CH₄) at parts-per-billion (ppb) and water (H₂O) vapor at parts-per-million (ppm) sensitivity with negligible drift for atmospheric science, air quality, and emissions quantification. It meets the World Meteorological Organization (WMO) and Integrated Carbon Observation System (ICOS) performance requirements for CO₂ and CH₄ atmospheric monitoring.

• Simultaneous and continuous measurement of three atmospheric trace gases
• Parts-per-billion sensitivity, precision, and accuracy with exceptionally low drift
• Compliant with WMO and ICOS international ambient atmospheric monitoring requirements
• Water correction automatically reports dry gas mole fractions

Precision at 5 seconds and 5 minutes is <70 and <25 ppb for CO₂ and <0.5 and <0.22 ppb for CH₄. Maximum drift at standard temperature and pressure (STP) over 24 hours is <120 ppb for CO₂ and <1 ppb for CH₄. Water correction software automatically reports dry gas mole fractions to help reduce research complexity and consumable costs.

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