Used to calibrate the carbon monoxide (CO) monitors in 3M™ Portable Compressed Air Filter and Regulator Panel 256-03-00, 3M™ Portable Compressed Air Filter and Regulator Panel 256-02-01 and 3M™ Retrofit CO Monitor Kit W-2808
Kit contains a 0.6 cubic foot cylinder of zero gas, a 0.6 cubic foot cylinder of span gas, cylinder valve and case
