GfG 7800-010 Calibration Gas: 20% LEL Methane, 19% Oxygen, Balance Nitrogen
GfG 7800-016 Calibration Gas: 50% LEL Methane, 20.9% Oxygen, 200 ppm Carbon Monoxide, Balance Air
GfG 7800-018 Calibration Gas: 20% LEL Methane, 20.9% Oxygen, 100 ppm Carbon Monoxide, Balance Air
GfG 7800-019 Calibration Gas: 50% LEL Methane, 19% Oxygen, 200 ppm Carbon Monoxide, Balance Nitrogen