Geotech is the market leading manufacturer and supplier for portable landfill gas and biogas analysers. Our analysers are used worldwide and are rapidly becoming even more important with the growing global focus on energy from waste (EfW).

About Us


Geotech is the market leading manufacturer and supplier of portable and fixed landfill gas analysers and biogas analysers. Around the world, Geotech gas analysers are rapidly becoming even more important with the growing focus on renewable energy from gas produced in anaerobic digestion and landfill sites.

Gas analysis is only part of a full range of environmental monitoring equipment that Geotech supplies, including groundwater sampling and monitoring instruments, pneumatic pumps for leachate control and remediation processes, as well as CO2 monitors and N2O monitors for the laboratory and medical industries.

Geotech offers a total support package to all its customers, supporting you from the moment you enquire. Support is delivered through on site demonstrations, field trials and product training, to post-sale servicing of equipment and ongoing technical support, provided by Geotech's in house dedicated and experienced technical support, service and sales teams.

The equipment manufactured at Geotech is made to the highest quality, working to a wide range of industry standards so customers can expect top reliability and complete peace of mind. Current standards Geotech have achieved and have led the market in are ISO17025 Calibration, ATEX certification on portable gas analysers, with MCERTS accreditation on the new GA5000, GEM5000 and BIOGAS 5000.

Geotech has a web of established international distributors and works closely with them to supply and support users of its equipment throughout the world. As well as full technical and product support, a number of Geotech's distributors can offer local equipment servicing to Geotech's own high standards.



Formed in 1988 in the landfill gas industry, Landtec grew to be a leading provider of technology and software for a better environment. Headquartered in Colton, California, Landtec designs and manufactures the Landtec System for accurate, repeatable measurement of methane and other greenhouse gases. The system includes Accu-Flo wellheads, GEM portable gas analysers, AEMS stationary monitoring systems and the EnviroComp report service.

Landtec merged with Geotechnical Instruments in October 2006 and maintains operations in the UK under the name Geotechnical Instruments UK Ltd (trading as Geotech).

'The merger represented a major milestone for our company' said Jamie Tooley, General Manager. 'By combining the broad range of innovative technology, development and production capabilities of Landtec, with Geotechnical Instrument's expertise in designing and manufacturing high performance gas analysers, we have created a dynamic company focused on fulfilling the global need for accurate and reliable monitoring systems.'

Landtec originally partnered with Geotechnical Instruments in 1991 to sell gas analysers and develop the GEM500 instrument. The GEM rapidly became the standard for monitoring gas quality and flow in the landfill gas industry throughout North America. Since that time, the two companies have jointly engineered other technology including the GEM500's successor, the GEM2000, and the stationary field analytical unit (FAU).

'We have combined two successful organisations focusing on methane recovery and renewable energy' said Jamie Tooley. 'Geotechnical Instruments has expanded our R&D and customer service capacities as well as the distribution of the Landtec system. Based on leading technology, web software and accepted methodologies; the Landtec system enables stakeholders in GHG reduction projects around the globe to accurately monitor gas production remotely.'

Geotech Customers

Geotech has supplied equipment and services to a range of organisations across the world, including:-

  • ALcontrol laboratories
  • AMEC
  • Ansyco
  • Biffa
  • EcoSecurities / S. A. Paulista
  • Energy Developments Ltd
  • Greenstar
  • Infinis
  • McCain Foods
  • Novera
  • Natural Power
  • Novagerar
  • Norfolk County Council
  • Pfizer
  • Shrigley Builders
  • Sita UK
  • Sita Power
  • Southern Water
  • SustainAgro
  • United Utilities
  • US Navy
  • Veolia
  • Viridor
  • Wychavon District council

Geotech Certifications


Our equipment is designed to comply with legislation across the world, particularly the demanding standards required in the UK and USA.


The name commonly given to the legal requirements for controlling explosive atmospheres and the suitability of equipment and protective systems used in them.
Click here to view the Geotech ATEX quality assurance notification.


Geotech has achieved UKAS 17025 accreditation for its calibration lab for its full range of landfill and biogas analysers. This gives users the most comprehensive externally audited and verified performance endorsement available for a manufacturer of portable gas analyser calibration.
Click here to view the Geotech UKAS accreditation certificate.


The Environment Agency's Monitoring Certification Scheme. It gives confirmation of performance of equipment to the demanding MCERTS standards which assists end users in demonstrating full compliance.

Click here to view MCERTS certificates


Geotech has been certified as operating a quality management system in compliance with the requirements of ISO 9001:2008 for the following scope: The quality management system for the design, manufacture, installation, maintenance, service, hire and recalibration of analytical equipment for use in environmental monitoring. Please visit the ISO website for further information.
Click here to view the Geotech ISO 9001:2008 certificate.

Summary of Geotech equipment certifications


More - About Us


Landfill and biogas

Geotech currently supplies the gas monitoring equipment for nearly 50% of UK anaerobic digestion, and we are market leaders in UK landfill gas monitoring and biogas analysis.



Groundwater is an important resource, so having accurate instruments for water quality monitoring is vital. Geotech supplies a range of instruments for groundwater monitoring and sampling.


Land remediation

Geotech has developed equipment for each stage of the remediation process, from identifying contamination to gas leak detection and the treatment of contaminated liquid.


CO2 monitoring

Our portable CO2 monitors are used in a variety of applications. Also measuring O2, temperature and humidity, they are versatile instruments for laboratories worldwide.


Medical gas

Verification of piped medical gases (N2O and O2) can be achieved with Geotech's G210 portable N2O analyser, and our G200 can be used for monitoring background levels of anaesthetic gases.


Coal mine methane

Geotech has developed gas monitoring products to optimise power generation from the natural gas released during mining, as well as for low concentration methane purposes.


Outdoor air quality

Currently working in partnership with a team from the University of Cambridge, Geotech will soon be launching a new air quality monitoring system for a range of gases.


BIOGAS - Model 5000 - Portable Biogas Analyser

The BIOGAS 5000 for accurate gas monitoring within biogas applications. It is easy to use, calibrate and configure and enables consistent collection of data for improved analysis and accurate reporting, whilst helping to check the digester process is running efficiently.

Geotech - Model GA5000 - Portable Landfill Gas Analyser for CH4, CO2, O2, H2S and CO Monitoring

The GA5000 landfill and contaminated land gas analyser with available gas measurements of CH4, CO2, O2, H2S and CO. It is easy to use and calibrate, benefiting from our market leading reliability and helping you to standardise monitoring routines, whilst supporting environmental legislation compliance.


Technical Support Services

At Geotech, technical support is available at any point.  Whether it's guidance on the equipment you plan to purchase or post-sales support with your instrument, our dedicated team of engineers are here to help.

Customer Support Services

Our dedicated customer support team aims to make your Geotech experience as smooth and trouble-free as possible. We look after your order from initial receipt until the goods are despatched,and understand how important it is for you to have all the information you may need.


GAM - Software Gas Analyser Manager Software

GAMS gas analyser manager enables users to maximise the operation of their gas analyser. It features a simple upload and download facility and is fully compatible with the latest Microsoft operating systems.

AEMS - AEMS Data Centre Remote Data Acquisition Software

Software application for remote download of data gathered by AEMS.


Product Training

Geotech offers hands-on bespoke training days for all customers on our ATEX certified range of landfill gas analysers and pneumatic Autopumps.  Training days can be tailored to suit your requirements and we can meet the needs of first time users, refresher courses or advanced monitoring techniques. The gas analyser training day can cover all aspects of operation of the gas analyser, including history of our gas analysers, technology ...


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CIWM Conference 2012, ET 2010 (Environmental Technology 2010)

Company details

Business Type:

Industry Type:
Monitoring and Testing

Market Focus:
Globally (various continents)


Office & Distributor locations:


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