BW 4-Gas 58L Calibration Mix CG-Q58-4 CO Gas Monitors The SO2 sensor has a

The SO2 sensor has a range of 0-100 ppm

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is completely impervious to oil and other petroleum products

The ends of the cover hold the connectors in position to facilitate clipping

BW 4-Gas 58L Calibration Mix CG-Q58-4 CO Gas Monitors The SO2 sensor has aBW CG Q58 4 standard bump test and calibration gas for BW Honeywell gas detection units contains specific gas concentrations. Gas Concentrations: Methane (CH4) 2. 5 percent Oxygen (O2) 18. 0 percent Hydrogen sulfide (H2S) 25 ppm Carbon monoxide (CO) 100 ppm Note: This item ships via UPS Ground due to HazMat restrictions and isn't available for expedited shipping. Calibration gas is not returnable. Please check your selection carefully before ordering.