3M Calibration Kit 529-04-49
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- Used to calibrate the carbon monoxide (CO) monitors in the 3Mâ„¢ Portable Compressed Air Filter and Regulator Panel 256-02-00, 256-02-01 and 3Mâ„¢ Retrofit CO Monitor Kit W-2808. Contains a 0.6 cubic foot cylinder of zero gas, a 0.6 cubic foot cylinder of span gas, cylinder valve and case.