CalGasOnline is an authorized distributor of GASCO, manufacturer of calibration gas.
GASCO's precision and quality is consistent with NIST standards.
3-Day Lead Times, many in stock.
Gasco Calibration Gas Cylinder with Propane (C3H8) 50% LEL, Hydrogen Sulfide (H2S) 40 ppm and Oxygen (O2) 19%. Balance Nitrogen. Available Sizes 34, 44, 58, 66 and 116 Liters.