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Tethys Instruments 
 is a leading global provider of gas and water on-line analysers for environmental applications. 
Headquartered in France, our distributors worldwide and us provide top-class service and instrumentation for environmental monitoring. 
 
Our technology based on UV spectroscopy offers unparalleled reliability and very low operating cost. 

Our new generations of gas and water analysers based on high speed digital signal processors provides unsurpassed performances in terms of

response time,
repeatability,
ease of use,
reliability.
 
A special emphasis has been put on the ergonomy and accessibility to ease the installation and minimize the service cost.