CO2 Isotope Analyser

Isotopic measurements of carbon dioxide allow determination of transport, uptake, residence time, sequestration, and depletion modes of carbon dioxide throughout the atmosphere and biosphere.
Carbon dioxide is a particularly useful gas for this type of analysis because of its presence in the metabolic processes of living organisms as well as being a by-product of combustion processes.

When making isotopic carbon dioxide measurements,scientists require: (1) accurate measurements over a wide range of mole fractions, (2) high precision, (3) ability to report reliable values even if mixing ratios are rapidly changing, (4) portability, (5) user-friendly interface, (6) low drift, (7) insensivity to H₂S, NH₃, as well as methane and other hydrocarbons.

ABB’s Carbon Dioxide Isotope Analyzers meet all of these requirements. In addition, the availability of many value-added options extends the abilities of these units to include discrete samples (collected in bags or vials) and to automatically handle multiple inlet sources.

Features and Benefits

• Simultaneous measurements of δ13C:, δ18O:, CO₂ and H₂O
• Unprecedented stability, precision and low drift
• Measurement rates selectable up to 1 Hz
• Installed and operational in minutes
• Batch operation via syringe injection option
• Insensitive to hydrocarbons or H₂S
• Extremely high dynamic range allows measurements of elevated CO₂
• Unsurpassed reliability
• Real-time diagnostics

    Please choose which specification you require information about

    All LGR Analysers now come with a 2 Year Warranty as standard, underlying the quality and robustness of their manufacture and high reliability. Warranties can also be extended to 3 or 4 years at additional cost, at the time of purchase. Please enquire for further details.

    Under normal operation and for the vast majority of applications, LGR Off-axis ICOS gas analysers require the minimum of servicing and maintenance.

    One of the many benefits of this technology is long-term unattended reliability in the field.

    LGR Advantages

    Annual maintenance would normally include an inspection of the internal pump (or external pump if fitted) and the replacement of the pump diaphragm and valve seals if necessary.

    This can be carried out by the user themselves or by ET either on site or back in the ET workshop (for a maintenance quote, please contact us).

    ET recommends that LGR Analyser users consider the purchase of a field maintenance kit which includes:

    • Replacement solid-state hard-drive with LGR operating system and specific system files pre-loaded, for quick and simple swap-out in the field if ever necessary.
    • Pump maintenance kit (internal) to include spare pump diaphragm and valve seals.
    • Mirror cleaning kit.


    Please contact us if you would like to receive a quote for the field maintenance kit.

    Additional maintenance will be required for the LGR Liquid Water Isotope Analyser (LWIA) and Auto-injector unit and also the LGR Dissolved Gas Extraction Unit (DGEU).

    For these instruments, please refer to the operation manual supplied with these instruments.

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