Measure the four most abundant CO2 gas isotopologues with high precision and accuracy with an analyzer so portable, it fits in a backpack. Engineered for mobile monitoring applications and for integration into established soil gas flux monitoring systems, the LI-7825 CO2 Isotope/NH3 Trace Gas Analyzer delivers dependable data, allowing researchers to ask and answer new questions with confidence. By measuring CO2 isotopologues and calculating isotope ratios, researchers can:
Backed by over thirty-five years of experience in gas analysis technology, the LI-7825 joins the LI-COR Trace Gas Analyzers trusted by researchers and networks around the world. Our platform uses Optical Feedback-Cavity Enhanced Absorption Spectroscopy (OF-CEAS) paired with patented technologies and innovations to provide a stable analyzer that requires little user maintenance and no factory calibrations – all at a more affordable price than previously available for isotopic measurements.
Learn more about what makes a LI-COR Trace Gas Analyzer different.
Source attribution with the LI-7825 CO2 Isotope/NH3 Trace Gas Analyzer
Featuring Dave Lowry at Royal Holloway University of London
In addition to atmospheric measurements, you can integrate the LI-7825 with our automated soil gas flux system to take simplified, continuous soil CO2 isotope and flux measurements. Confidently investigate long-term soil carbon cycle dynamics with real-time Keeling-based soil δ13C estimates and automated on-site calibration.
Explore how you can take your CO2 isotope research from the air to the soil.
The LI-7825 meets or exceeds requirements for long-term atmospheric background measurements and offers a versatile platform for a range of applications for a better understanding of CO2 emissions from anthropogenic and natural sources.
The LI-7825 measures higher concentrations of NH3, and is suitable for detecting ammonia in livestock barns, feedlots, barnyards, fertilizer applications, fence line monitoring, ammonia leaks, and other applications where NH3 concentration is elevated above natural abundance.
While the analyzer provides accurate NH3 measurements of the air reaching the sample cavity, users will need to account for the adsorption of NH3 to the sampling equipment in soil gas flux systems. NH3 measurements are not supported for LI-COR soil gas flux systems.
*NH3 measurement response time is dependent upon gas composition and inlet pneumatic configuration including tubing/fitting materials, flow rates, and upstream volumes.
Specifications subject to change without notice.
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