CO2 occurs naturally in air at approximately 400ppm.  This increases in offices and buildings, especially if poorly ventilated.  Because of this you cannot zero calibrate the CO2 value on Geotech analysers as this would cause a negative offset and false reading.

Take a look at our product brochure which tells you more about our CO2 products and where they can be used.

Geotech’s CO2 monitoring products:


It is essential that laboratory incubators run at a consistent temperature, humidity and CO2 level to maintain optimum cell growth in embryo cultures and IVF.  Whilst incubators themselves have a built-in system for monitoring CO2, even the highest quality of on-board instruments can sometimes drift out of calibration, for example, as a result of intense cleaning and maintenance regimes at high temperatures.

Our G100 portable analyser is used to quickly and accurately confirm the CO2, O2, humidity and temperature levels or distinguish whether a local calibration is required on the incubator.

CO2 monitoring for Kerry Foods

How the company operates The Kerry Foods plant processes food ingredients, such as fruit conserves and confectionery sauces, which are stored and distributed in 2000 tanks. Each tank is monitored regularly for patterns of CO2 build-up.  Although CO2 levels may rise to above 1% with some foods, such as strawberry or peach, higher levels can…
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Companies often monitor CO2 levels in buildings – have you heard of Sick Building Syndrome?  This syndrome describes situations in which building occupants experience fall ill due to poor indoor air quality.  The causes are often as a result of flaws in the building’s heating, ventilation, and air conditioning.

Other sectors


Geotech is the market leading supplier of anaerobic digestion gas monitoring equipment in the UK. We supply portable and fixed gas monitoring solutions for anaerobic digestion operations throughout the world.


We have over 30 years’ experience of monitoring gases and liquids on landfill sites, working closely with businesses to offer reliable and sophisticated gas analysers, gas monitoring systems and data management software.

Land Remediation

Contamination can arise from a number of circumstances, including fuel spills and plant leaks.  Land remediation is a likely scenario in the development of brownfield sites and is subject to legislative standards.

Medical Gas

Verification of piped medical gases (N2O and O2) within medical, dental and veterinary environments can be achieved with our G210 portable N2O analyser, and our G200 is used for monitoring background levels of anaesthetic gases.


Geotech supplies a wide range of water sampling, water quality and level measurement solutions. We are able to offer you a solution on how to sample, monitor, extract and separate contaminants from within your water.