Calibration gas, Hydrogen Sulfide, Nitrogen, 44 L, C-10 Connection, +/-5% Accuracy
64 in, For Use With All OEM Gas Detectors, Gas Mixture Hydrogen Sulfide 25 ppm, Gas Type Hydrogen Sulfide, Product Type Calibration Gas, Chemical Formula H2S, CAS Number 7783-06-4, Accuracy +/-5 Percent, Background Gas Nitrogen, Calibration Certificate NIST, Cylinder Material Aluminum Alloy, Outlet Connection Size 5/8 In.