Industrial Scientific 1810-9182 Equivalent Calibration Gas: 25% LEL Pentane, 18% Oxygen, 100 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, 2.5% Carbon Dioxide, Balance Nitrogen
Industrial Scientific 1810-9183 Equivalent Calibration Gas: 50% LEL Methane, 18% Oxygen, 250 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, Balance Nitrogen
Industrial Scientific 1810-9184 Equivalent Calibration Gas: 2.5% vol. Methane, 18% Oxygen, 100 ppm Carbon Monoxide, 5 ppm Nitrogen Dioxide, Balance Nitrogen
Industrial Scientific 1810-9185 Equivalent Calibration Gas: 40% LEL Methane, 18% Oxygen, 100 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, 2.5% Carbon Dioxide, Balance Nitrogen
Industrial Scientific 1810-9188 Equivalent Calibration Gas: 50% LEL Propane, 18% Oxygen, 100 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, Balance Nitrogen
Industrial Scientific 1810-9189 Oxygen Equivalent Calibration Gas - 18% vol. (O2)
Industrial Scientific 1810-9190 Equivalent Calibration Gas: 25% LEL Pentane, 18% Oxygen, 100 ppm Carbon Monoxide, Balance Nitrogen
Industrial Scientific 1810-9191 Equivalent Calibration Gas: 25% LEL Pentane, 18% Oxygen, 100 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, Balance Nitrogen
Industrial Scientific 1810-9192 Equivalent Calibration Gas: 50% LEL Methane, 18% Oxygen, 100 ppm Carbon Monoxide, 25 ppm Hydrogen Sulfide, Balance Nitrogen