The LGR-ICOS™ GLA431-TLWIA Triple Liquid Water Isotope Analyser adds a second laser to the Off-Axis ICOS cavity, to enable measurements of δ¹⁷O and O¹⁷-excess, in addition to δ²H and δ¹⁸O. This enables researchers to make new, novel measurements of δ¹⁷O ratios in liquid water, while retaining all of the features and the same form factor as the standard GLA431-LWIA.

The GLA431-LWIA is ideal for a wide variety of hydrological, analytical, and biological applications that involve measurements of fresh water, seawater, and other liquids. The Analyser’s ease-of-use, field durability, and high throughput make it the industry standard. ABB’s Triple Liquid Water Isotope Analyser is used by researchers, scientists, governmental agencies and intergovernmental organisations on all 7 continents.

How it works

As with all ABB-LGR analysers, this utilises Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS). A patented, fourth-generation cavity enhanced technique, OA-ICOS has many advantages over older and more delicate techniques such as Cavity Ring-Down Spectroscopy (CRDS), and conventional laser spectroscopy.

In addition to providing extreme sensitivity due to the folded absorption path, and a wide dynamic range due to the direct absorption-based measurement, OA-ICOS is an inherently robust technique. Due to the off-axis alignment of the optics, LGR analysers are far less sensitive to temperature variations, vibrations, shocks, and dust than similar cavity-based methods. This also means the optics can be cleaned by the user, without needing an expensive return to the factory.

The versatility and sturdiness of the OA-ICOS measurement cell enables reliable measurements in a wide range of applications and environments. ABB-LGR employs the OA-ICOS technique to measure a wide variety of gases and isotopes, in both ultra-precise rackmount laboratory instruments, and portable gas analysers for the field. All ABB-LGR analysers supplied by Enviro Technology are backed by a 2-year manufacturer warranty, and responsive support from our expert team of UK-based technicians.

Servicing

Servicing information