SMART-CAL Standard Gas Kit 221 Liter Combo

Not for use with Hydrogen Sulfide, Propane, or 100% Methane. Includes a 221L cylinder of a combination of 2.5% Methane and 100ppm Carbon Monoxide gas, a regulator, and hose. For use with the SENSIT Gold G2 Combustible Gas Leak Detector and Trak-It IIIa Combustible Gas Indicator.