O2 12.0%

Hydrogen Sulfide (H₂S) 10 PPM / Carbon Monoxide (CO) 50 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 12.0% / Nitrogen BAL 4-Gas Calibration Gas – 66L 1150 PSI C-10 Aluminum (Reactive)

66L 12.0% O₂ Calibration Gas – Ultra-Extreme Oxygen Deficiency Simulation This 66 Liter reactive 4-gas calibration cylinder is formulated to simulate ultra-extreme oxygen-deficient environments at 12.0% O₂, significantly below OSHA’s 19.5%...

Hydrogen Sulfide (H₂S) 10 PPM / Carbon Monoxide (CO) 50 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 15.0% / Nitrogen BAL 4-Gas Calibration Gas – 66L 1150 PSI C-10 Aluminum (Reactive)

66L 15.0% Oxygen Calibration Gas – Extreme Deficiency Simulation This 66 Liter reactive 4-gas calibration cylinder is formulated to simulate extreme oxygen-deficient environments at 15.0% O₂, significantly below OSHA’s 19.5% minimum safe...