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Analytical Industries Inc (AII) is renowned for its high-quality, reliable electrochemical galvanic oxygen sensors and rugged, easy to use analyzers and portable instruments. Headquarted in Pomona, California, AII was established in 1994 by three engineers who wanted to use their understanding of electrochemical oxygen sensing techniques to create a new generation of sensors with superior measurement ranges and lifespan.

Michell Instruments is an international leader in high-precision sensing with 40 years’ experience in the field, specialising in instrumentation for dew point, relative humidity and oxygen analysis. The company serves industries as diverse as petrochemical and pharmaceutical to power generation and food processing.