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![Refrigerants R4-V Infrared Gas Transmitter](https://images.findtheneedle.co.uk/findtheneedle/products/17190797.jpg)
Available calibration options: SF6, R1234, R134a, R125 or R507.
For more information on Refrigerants R4-V Infrared Gas Transmitter talk to Euro-Gas Management Services Ltd
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