Gasco Multi-Gas 401: 50% LEL Methane, 21% Oxygen, 250 ppm Carbon Monoxide, 40 ppm Hydrogen Sulfide, Balance Nitrogen
Gasco Multi-Gas Bump Test 401: 50% LEL Methane, 21% Oxygen, 250 ppm Carbon Monoxide, 40 ppm Hydrogen Sulfide, Balance Nitrogen