Product Description Item Number | 18106633 Industrial Scientific Calibration Gas, 650 Liter, 25 ppm H2S, CGA-330 Male Fitting, 2000 PSI. Equipped with Industrial Scientific iCard for connectivity to iCard Readers on DSX & DS Series Docking Stations. We can assure you that Durawear always ships fresh calibration gas with the best possible expiration date from the factory.
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