Air Systems International BBK-20 Airline Monitor Calibration Kit For CO Monitor - 17 Liters

Air systems carbon monoxide/oxygen calibration kit is available in 17 liter. The kit includes two pressurized 17 liter cylinders. One cylinder contains zero air, the other contains 20ppm of CO. Also includes air, regulator, pressure gauge, tubing, and hard case. This cylinders are disposable. All airline monitors should be calibrated on a monthly basis or if the accuracy of the monitor is in question.