Product Description
120L 4-Gas Calibration Cylinder – 15 PPM H₂S / 50 PPM CO with 18% Oxygen
This high-capacity 4-gas calibration blend is designed for organizations running lower toxic alarm thresholds and structured oxygen-deficiency validation programs.
With hydrogen sulfide at 15 PPM and carbon monoxide at 50 PPM, this blend supports sensitive toxic channel calibration while maintaining combustible and oxygen sensor confirmation in a single cylinder.
Gas Composition Profile
Hydrogen Sulfide (H₂S): 15 PPM
Carbon Monoxide (CO): 50 PPM
Methane (CH₄): 2.5% (50% LEL)
Oxygen (O₂): 18.0%
Balance Gas: Nitrogen
• 15 PPM H₂S supports early toxic alarm verification.
• 50 PPM CO aligns with conservative CO alarm programming.
• 2.5% methane equals 50% LEL for combustible sensor validation.
• 18.0% oxygen simulates controlled oxygen deficiency below OSHA’s 19.5% benchmark.
This mixture confirms response accuracy across all four sensor channels without requiring multiple cylinders.
Cylinder Specifications
Cylinder Capacity: 120L (4.2 Cubic Feet)
Fill Pressure: 1050 PSI
Valve Type: C-10
Cylinder Material: Aluminum
Gas Reactivity: Reactive
The 1050 PSI fill pressure supports extended calibration cycles and reduces change-out frequency in high-volume environments.
Ideal For
• Central calibration stations
• Industrial hygiene departments
• Confined space compliance programs
• Utility and wastewater facilities
• Large safety fleets with scheduled servicing intervals
The 120L configuration is selected when efficiency, uptime, and stable output are operational priorities.
