MSA 10058023 Calibration Gas Mixture Equivalent by GASCO contained in a 34 Liter Disposable Steel Cylinder, For Use with Any and All Gas Detectors, Cylinder Connection CGA 600, Calibration Certificate NIST, Made in the USA

GASCO Calibration Gas 300 PPM Carbon Monoxide, 2.5 % Carbon Dioxide, 1.45 % Methane, (29 % LEL), (58 % LEL Pentane Equivalent), 15 % Oxygen, Balance Nitrogen in a 34 Liter Steel Cylinder CGA 600 Connection