Air quality science looks at the degree to which the ambient air contains pollution. There are several factors that can affect air quality, both natural—such as from volcanic eruptions or dust—as well as human-induced. Significant outdoor sources of anthropogenic air pollution include carbon dioxide (CO₂) from vehicles and aircraft, as well as methane (CH₄) and ammonia (NH₃) from raising livestock. Indoor sources include formaldehyde (H₂CO) from household products and carbon monoxide (CO) from gas stoves. Air quality monitoring networks include satellites, airborne sampling, and ground methods.

Product	Model	Measurements
G2103 Gas Concentration Analyzer The Picarro G2103 gas concentration analyzer provides precise, real-time measurement of ammonia (NH3) and water (H2O) vapor. It incorporates coated components in the critical gas pathway. This reduces the propensity of NH3 molecules to adhere to pathway surfaces, which improves measurement response time.	G2103	Ammonia (NH3)
G2108 Gas Concentration Analyzer The Picarro G2108 gas concentration analyzer provides precise, real-time measurement of hydrogen chloride (HCl) and water (H2O) vapor at parts-per-trillion (ppt) sensitivity with negligible drift for atmospheric science and air quality applications.	G2108	Hydrogen Chloride (HCl)
G2203 Gas Concentration Analyzer The Picarro G2203 gas concentration analyzer provides simultaneous, precise measurement of methane (CH4) and acetylene (C2H2) at parts-per-billion (ppb) sensitivity with negligible drift for measuring fugitive emissions of CH4 from landfills, or other extended CH4 sources, using a C2H2 tracer measurement for quantifiable emission rates.	G2203	Methane (CH4) Acetylene (C2H2)
G2204 Gas Concentration Analyzer The Picarro G2204 gas concentration analyzer provides simultaneous, precise measurement of methane (CH4) and hydrogen sulfide (H2S) at parts-per-billion (ppb) sensitivity with negligible drift for emissions measurements from landfills, refineries, paper mills, or industrial plants.	G2204	Methane (CH4) Hydrogen Sulfide (H2S)
G2205 Gas Concentration Analyzer The Picarro G2205 gas concentration analyzer provides precise, real-time measurement of hydrogen fluoride (HF) and water (H2O) vapor at parts-per-trillion (ppt) sensitivity with negligible drift for atmospheric science and air quality applications.	G2205	Hydrogen Fluoride (HF) Water (H2O)
G2301 Gas Concentration Analyzer The Picarro G2301 gas concentration analyzer provides simultaneous, precise measurement of carbon dioxide (CO2), methane (CH4), and water (H2O) vapor at parts-per-billion (ppb) sensitivity with negligible drift for atmospheric science, air quality, and emissions quantification.	G2301	Carbon Dioxide (CO2) Methane (CH4) Water (H2O)
G2307 Gas Concentration Analyzer The Picarro G2307 gas concentration analyzer provides precise, real-time measurement of formaldehyde (H2CO), methane (CH4), and water (H2O) vapor.	G2307	Formaldehyde (H2CO) Methane (CH4) Water (H2O)
G2401 Gas Concentration Analyzer The Picarro G2401 gas concentration analyzer provides simultaneous, precise measurement of carbon monoxide (CO), carbon dioxide (CO2), methane (CH4), and water (H2O) vapor at parts-per-billion (ppb) sensitivity with negligible drift for atmospheric science, air quality, and emissions quantification.	G2401	Carbon Monoxide (CO) Carbon Dioxide (CO2) Methane (CH4) Water (H2O)
G2401-m In-flight Gas Concentration Analyzer The Picarro G2401-m gas concentration analyzer provides simultaneous, precise measurement of carbon monoxide (CO), carbon dioxide (CO2), methane (CH4), and water (H2O) vapor at parts-per-billion (ppb) sensitivity with negligible drift for atmospheric science, air quality, and emissions quantification.	G2401-m	Carbon Monoxide (CO) Carbon Dioxide (CO2) Methane (CH4) Water (H2O)
GasScouterTM G4301 Mobile Gas Concentration Analyzer The Picarro GasScouter™ G4301 is a new-generation, light-weight, portable, battery-powered cavity ring-down spectroscopy (CRDS) gas concentration analyzer designed for science on the move. It is a perfect mobile solution for high-precision greenhouse gas measurements in the world’s most challenging, remote environments.	G4301	Carbon Dioxide (CO2) Methane (CH4)
G5310 Gas Concentration Analyzer The Picarro G5310 gas concentration analyzer provides simultaneous, precise measurement of nitrous oxide (N2O), carbon monoxide (CO), and water (H2O) vapor at parts-per-trillion (ppt) sensitivity with negligible drift for atmospheric science, air quality, and emissions quantification.	G5310	Nitrous Oxide (N2O) Carbon Monoxide (CO) Water (H2O)

Peripherals

Product	Model	Measurements
Combustion Module The Combustion Module, designed for Picarro by Costech (a leader in combustion systems), combusts solid samples as small as 250mg C to release CO2 gas. The Combustion Module is connected to a Picarro isotopic analyzer via the Picarro Caddy (A2100) or the Picarro Liaison™ Universal Interface (A0301) for high-precision carbon isotope (13C) measurements from carbon dioxide.	A0201	Isotopic Carbon Dioxide (iCO2)
16-Port Distribution Manifod The Picarro 16-Port Distribution Manifold provides unparalleled multiport sample-data collection.	A0311	Carbon Monoxide (CO) Carbon Dioxide (CO2) Methane (CH4) Ethane (C2H6) Acetylene (C2H2)

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