Product Description
221L CO / Pentane / Oxygen Calibration Gas (25% LEL, 20.9% O₂) for High-Volume Compliance Calibration
This 221L calibration gas cylinder is designed for high-volume calibration under normal atmospheric conditions, containing a precise mixture of Carbon Monoxide (CO) 100 PPM, Pentane (C₅H₁₂) 0.375% (25% LEL), and Oxygen (O₂) 20.9%, balanced with nitrogen. Pressurized to 250 PSI, this non-reactive disposable steel cylinder is ideal for multi-instrument calibration, extended field operations, and growing safety programs requiring longer runtime without bulk infrastructure.
Gas Mixture & Cylinder Specifications
- Carbon Monoxide (CO): 100 PPM
- Pentane (C₅H₁₂): 0.375% (25% LEL)
- Oxygen (O₂): 20.9%
- Balance Gas: Nitrogen
- Cylinder Size: 221L (7.5 cu ft)
- Pressure: 250 PSI
- Material: Steel
- Valve: CGA-165
- Reactivity: Non-Reactive
Applications & Use Cases
- Multi-user gas detector calibration programs
- Extended calibration cycles in field environments
- Compliance testing under 20.9% atmospheric oxygen conditions
- LEL verification at 25% LEL pentane concentration
- Industrial hygiene and safety program scaling
Why Buyers Choose This 221L Cylinder
- High volume capacity reduces replacement frequency
- Ideal for teams running frequent calibration cycles
- 25% LEL + 20.9% O₂ meets standard compliance requirements
- No need for bulk storage systems or refill infrastructure
- Strong balance between capacity and operational flexibility
Custom Calibration Gas Solutions
We produce calibration gases for a wide variety of gas detectors. If you require a custom blend not listed, contact us for a quick quote tailored to your application.
Other Details
Warranty 48 monthsProduct Videos
Custom Field
Size 221LS
Gas Composition CO / C5H12 / O2
Cylinder Material Steel
Cylinder Pressure 250 PSI
Gas Reactivity Non-Reactive
Carbon Monoxide (CO) Concentration 100 PPM
Pentane (C5H12) Concentration 0.375% (25% LEL)
Oxygen (O2) Concentration 20.9%
