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 – 44L 750 PSI C-10 Aluminum (Reactive)

44L 12.0% O₂ Calibration Gas – Portable Ultra-Deficiency Verification This 44L reactive 4-gas calibration cylinder simulates ultra-low oxygen environments at 12.0% O₂, allowing confirmation of alarm activation under severe depletion conditions...

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 – 44L 750 PSI C-10 Aluminum (Reactive)

44L 15.0% O₂ Calibration Gas – Portable Extreme Deficiency Simulation This 44 Liter reactive 4-gas calibration cylinder is engineered to simulate extreme oxygen-deficient environments at 15.0% O₂, creating a high-severity validation condition well...