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Los Gatos Research

Los Gatos Research (LGR)

LGR manufactures the world's leading trace gas and isotope analyzers based on Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS).    These systems may be used for a wide range of isotopic analysis and environmental applications.  A brief description of the LGR products may be shown below.  Please contact us for any questions or assistance in configuring a system.

Major LGR products for environmental and isotopic analysis applications include:

Ultraportable Greenhouse Gas Analyzer (CH4,CO2,H2O)
LGR’s Ultraportable Greenhouse Gas Analyzer (UGGA) reports measurements of methane, carbon dioxide and water vapor simultaneously in a package that is compact and crushproof. For more details, click here.
Methane Analyzers
Environmental: LGR's Ultra-Portable Methane Analyzer (UMA) reports measurements of methane and water vapor simultaneously in a package that is compact and crushproof. Small enough to be carried on-board aircraft (TSA approved size) and requiring only 60 watts, the UMA travels anywhere, initiates data collection within 100 seconds after power up, and opens up new opportunities to accurately and precisely measure methane with ease.

As with all LGR instruments, the UMA is simple to use which makes it ideal for field studies, compliance monitoring, leak detection (e.g., natural gas, coal seam gas, coal bed methane), air quality studies and soil flux studies, and wherever fast, accurate and precise measurements of methane are needed.  In addition, as with all LGR instruments, the UMA reports fully resolved absorption lineshapes in real time which allows LGR instruments to accurately correct for water vapor dilution and absorption line broadening effects accurately and thus to report CH4 on a dry mole fraction basis directly without drying or post processing.

Furthermore, LGR’s new “Extended Range” option provides accurate methane measurements at levels up to 10% mole fraction (without dilution) without reducing precision and sensitivity at typical ambient levels - a unique LGR capability.  Moreover, only LGR’s analyzers provide reliable guaranteed measurements at mole fractions much greater than 1000 times ambient levels.  For more details, see the LGR Methane Analyzer web page.

Isotopic Analysis: LGR's systems provide sub-ppm precision for d13C in methane with a rapid response time, suitable for energy exploration, biogas production and for studies of anaerobic digestion, methanogenic bacteria, methane hydrates, hydrothermal vent effluents, and other applications involving isotopic ratios in methane.  More info on isotopic analysis may be found at the LGR web page.
Carbon Dioxide Analyzers
Environmental: Insensitive to other atmospheric gases, the Carbon Dioxide Analyzer measures carbon dioxide and water vapor in ambient air with unsurpassed accuracy and precision without the need for frequent external calibration. The instrument can store data practically indefinitely on its internal hard disk drive and can send real-time data to a data logger through its analog, digital (RS232), and Ethernet outputs allowing unattended long-term standalone operation.  For more details, please see the LGR carbon dioxide analyzer web page

Isotopic Analysis: LGR’s Carbon Dioxide Isotope Analyzer is easy-to-use and requires low power to facilitate measurements in the field. The instrument provides accurate isotopic ratio measurements over an extremely wide range of CO2 values even when those values change rapidly.

LGR also offers LGR's model CCIA-36 (Enhanced Performance) provides measurements of δ13C and δ18O as well as mole fractions (concentrations) of carbon dioxide and water vapor with high precision at measurement rates of up to 1 Hz.

LGR's new model CCIA-46 (Enhanced Performance)  provides measurements of δ13C, δ17O and δ18O, as well as mole fraction (concentration) of  carbon dioxide,  with extraordinary precision at measurement rates of up to 5 Hz.

For more details, please see the LGR carbon dioxide isotope analyzer web page.
Methane/Acetylene Analyzers
LGR’s new Ultraportable Methane/Acetylene Analyzer (UMAA) reports measurements of methane, acetylene and water vapor simultaneously in a package that is compact, crushproof and travels anywhere. Small enough to be carried on-board aircraft (TSA approved size) and requiring about 60 watts (including pump), the UMAA offers opportunities to measure anywhere. As with all LGR instruments, the UMAA is simple to use which makes it ideal for landfill tracer studies, compliance monitoring, leak detection, air quality studies, process monitoring, and wherever measurements of methane, acetylene and water vapor are needed. For more details, see the LGR Methane Acetylene Analyzer web page.
N2O Analyzers
LGR offers a number of different N2O analyzers, including:

N2O/CO Analyzer: LGR's N2O/CO Analyzer (Nitrous Oxide and Carbon Monoxide Analyzer) is the first instrument capable of continuously measuring ambient levels of nitrous oxide and carbon monoxide (with precision better than 0.1 ppb in 1 second) in real time (data rates to 10 Hz). Users can set up the instrument in minutes. Since CO is an excellent tracer of anthropogenic emissions, simultaneous measurements of CO and N2O can allow scientists to correlate the sources of N2O emissions.  The N2O/CO Analyzer now also simultaneously measures water vapor  mole fraction. As a result, the instrument reports N2O and CO on a dry mol basis (accurately corrects for water vapor dilution and absorption line broadening effects) without the need for sample drying or empirical corrections.   For more details, see the LGR N2O/CO web page.

Isotopic N2O Analyzer: N2O is a linear, non-symmetric molecule (N–N–O), with one nitrogen atom at the center (alpha site) and one at the end (beta site). Therefore, one can distinguish between two structural isomers containing one heavy isotope of nitrogen, namely 14N15N16O and 15N14N16O, referred to as 15Nα and 15Nβ, respectively.  The intramolecular distribution of 15N in N2O can provide information about the geochemical cycle of N2O because many biological and chemical processes have distinct isotopic signatures.

LGR’s Isotopic N2O Analyzer (Isotopic Nitrous Oxide Analyzer) is the world’s first commercially available laser-based gas analyzer that measures isotopic site-specific (15N) nitrogen in N2O. Employing a continuous-wave mid-infrared quantum cascade laser along with LGR’s patented cavity enhanced laser absorption spectroscopy technique (Off-axis ICOS), LGR’s Isotopic N2O Analyzer provides continuous and precise measurements of the site-specifi�c isotopic ratios δ15Nα and δ15Nβ, and δ18O, of N2O directly and without preconcentration.

This novel instrument may be used to elucidate processes in soil and wastewater incubation experiments (e.g., bacterial denitrification method) as well as in ambient air for source allocation.  For more information, see LGR's web page.

CH4/N2O Analyzer (Methane and Nitrous Oxide Analyzer): continuously measures ambient levels of methane and nitrous oxide simultaneously in real time with data rates and flow response rates as fast as 10 Hz.  As with all LGR Analyzers, users can set up the instrument in minutes. Simultaneous measurements of CH4 and N2O can allow scientists to correlate the sources of emissions of these important greenhouse gases.  The  CH4/N2O Analyzer also simultaneously measures water vapor  concentration. As a result, the instrument reports gas concentrations on a dry mol basis directly (accurately corrects for water vapor dilution and absorption line broadening effects) without the need for sample drying or empirical corrections.

The CH4/N2O Analyzer is designed for many demanding applications including trace-gas (air quality) monitoring (e.g., GAW stations), eddy-correlation flux measurements, and chamber flux measurements. The Analyzer is particularly well suited for measurements in the field and on-board aircraft for measurements in the upper troposphere / lower stratosphere. The CH4/N2O Analyzer is unaffected by other atmospheric gases or changes in atmospheric pressure.  For more information, see the LGR CH4/N2O web page.
Isotopic Water Analyzer (Liquid and Vapor)
LGR’s Isotopic Water Analyzer (model IWA-45EP) is the world’s most advanced instrument for measurements of both isotopic liquid water (including wines) and water vapor. The IWA-45EP combines the features of LGR’s Liquid Water Isotope Analyzer and Water Vapor Isotope Analyzer (Enhanced Performance model) in a single instrument. For liquid water samples, the IWA-45EP reports measurements at a rate of over 800 injections per day.  With the typical operating procedure (6 injections per sample), this measurement rate yields over 130 total samples per day.  For continuous measurements of water vapor, the IWA-45EP reports δ17O , δ18O and δ2H and water vapor mole fraction over a range of mole fractions greater than 60000 ppm H2O in air.   Changing between operational modes could not be simpler  - with only a simple switch, the user can switch from measuring liquid water to measuring water vapor, or vice versa. - For more details, see LGR's Isotopic Water Analyzer page.
Ammonia Analyzer
LGR's Ammonia Analyzer provides sensitive measurements of ammonia in ambient air or in process flows containing ethylene with extremely high precision and sensitivity. No longer do you have to spend a lot of money or wait a long time or rely on scrubbers to measure ammonia with high sensitivity – LGR’s Ammonia Analyzer provides direct measurements every second with ppb-level precision. In addition, the Ammonia Analyzer can report measurements quickly (fast response time) over a very wide range of concentrations. The instrument, based on LGR’s cavity enhanced laser absorption spectroscopy, is simple to use, inexpensive to operate, and includes all components (internal vacuum pump, keyboard,mouse, video monitor) to start recording data within minutes. For more information, see the LGR Ammonia Analyzer web page.
H2S/NH3 Analyzer (hydrogen sulfide, ammonia, water vapor)
LGR’s new H2S/NH3 Analyzer (ammonia, hydrogen sulfide) provides sensitive measurements in ambient air or in industrial process flows with extremely high precision and sensitivity. No longer do you have to wait a long time to measure these gases with high sensitivity and accuracy – LGR’s H2S/NH3 Analyzer provides measurements every second with sub-ppm level precision. In addition, the H2S/NH3 Analyzer can report measurements quickly over a very wide range of mole fractions even in complex process flows.

LGR’s H2S/NH3 Analyzer is available in different versions to allow users to select the model suitable for their needs. LGR’s “high sensitivity” model is designed for ultra trace detection of NH3 and H2S in ambient air, industrial process streams, or wherever highest detectivity is required.  LGR’s “industrial” model is designed for high accuracy measurements in complex processes which contain NH3 and H2S at levels that exceed the dynamic range of other analytical techniques.   For more details, see the LGR H2S/NH3 Analyzer web page.

 In addition to these analyzers, LGR offers a range of other analyzers to meet your measurement needs.  To learn more about the full suite of LGR analyzers,
contact us or see the LGR web page and select the Ultraportable, Trace Analysis, or Isotopic Analyer tabs.