Gasco Calibration Gas 60 PPM Carbon Monoxide, 20 PPM Hydrogen Sulfide, 1.45% Methane (29% LEL)(58% LEL Pentane Simulant), 15% Oxygen, Balance Nitrogen 58 Liter Cylinder C-10 Connection Type

GASCO 58L-428-20 | X05NI83CP5875D8 | 60 PPM CO, 20 PPM H₂S, 1.45% CH₄ (29% LEL, 58% Pentane Simulant), 15% O₂, balance N₂ in a 58L aluminum cylinder. C-10 5/8"-18 UNF connection. Includes NIST calibration certificate. Made in the USA.