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Edinburgh Instruments Ltd


The sensors division Edinburgh Instruments, Edinburgh Sensors, designs, manufactures and supplies a wide range of gas sensors for measuring CO2, CO, CH4 and various refrigerants. Our sensors can be supplied as OEM sensors for systems integration or as wall mounted sensors.

The application of our continued research and development has contributed to several major advances in the world of infrared gas sensing and delivered a comprehensive portfolio of products for the detection. This technology has been widely accepted and standardised by many other gas sensor manufacturers worldwide.


Julie McCormick
4 Bain Square, Kirkton Campus

EH54 7DQ

Edinburgh Sensors product of choice for TOC monitoring

Edinburgh Sensors is pleased to announce its sensors are now being integrated into a number of systems for Total Organic Carbon (TOC) measurement. A number of key global players have adopted Edinburgh Sensors products into their applications and as interest continues, Edinburgh Sensors are becoming the product of choice.

Total Organic Carbon represents a measure of the amount of carbon, in a water sample, that has a biological source, this includes oil.

The Total Inorganic Carbon (TIC) is typically removed from a sample using acidification and/or purging before oxidising the remaining organic carbon in the water sample to carbon dioxide and then measuring the amount of carbon dioxide produced.

There are several methods of oxidising the organic carbon employing: - oxygen, wet chemistry, UV radiation or heat to produce the carbon dioxide. Whichever method is used, the result is carbon dioxide dissolved in a carrier gas, commonly oxygen.

The carrier gas is passed through the Edinburgh Sensors NDIR gas sensor to measure the carbon dioxide content. The higher the carbon dioxide concentration the higher the TOC level and the less clean the water sample is.

Depending on the cleanliness of the water under test and the methods used different carbon dioxide concentrations are to be expected in the carrier gas, from wastewater with mgms/l of organic carbon giving % levels of carbon dioxide to drinking water with y ╬╝gms/l giving ppm's of carbon dioxide in the carrier gas.

Edinburgh Sensors is a division of Edinburgh Instruments, according to Mark Vosloo, CEO, "We are delighted that our high performance sensors products are delivering the speed, accuracy and reliability required by customers. Equally, our products are easy to integrate which makes it the product of choice."

For further information please email Edinburgh Instruments Ltd

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