The MSA calibration gas tank is packaged 1 per case and is for use with ALTAIR 5X Multi-Gas Detector. Proper sizing is important when buying this product. The size for this product is 58 L. This calibration gas tank detects 1.45% CH4/15% O2/60 ppm CO/20 ppm H2S/10 ppm SO2 levels in the environment.
