Gasco Custom Calibration Gas 1000 PPM H2, 2% Methane, 20% O2, balance N2 | 116 LITER | C-10 116 LITER C-10 For Use with Any and All Gas Detectors, Cylinder Connection C-10, Calibration Certificate NIST, Made in the USA
Pressure about 900 PSI
Volume 67.3 Cubic Feet