Product Description
20.9% Oxygen Calibration Gas – CO 100 PPM / CH₄ 1.0% (20% LEL) – 221L Cylinder
This 20.9% oxygen calibration gas is designed for routine calibration under normal atmospheric conditions, ensuring stable and repeatable gas detector performance across daily operations.
The mixture includes Carbon Monoxide (CO) 100 PPM for toxic gas calibration and Methane (CH₄) 1.0% (20% LEL) for low-level combustible gas response verification, validating early detection thresholds. Oxygen at 20.9% replicates ambient air conditions, making this gas ideal for compliance-driven calibration, maintenance, and ongoing safety programs.
Supplied in a 221L steel cylinder at 250 PSI with a CGA-165 valve, this configuration is engineered for extended calibration cycles, allowing teams to reduce cylinder changeouts while maintaining consistent detector validation.
Gas Concentrations
| Gas | Concentration |
|---|---|
| Carbon Monoxide (CO) | 100 PPM |
| Methane (CH₄) | 1.0% (20% LEL) |
| Oxygen (O₂) | 20.9% |
| Balance | Nitrogen (N₂) |
Cylinder Specifications
| Specification | Value |
|---|---|
| Cylinder Size | 221 Liters |
| Pressure | 250 PSI |
| Volume | 7.5 Cubic Feet |
| Material | Steel |
| Valve | CGA-165 |
| Reactivity | Non-Reactive |
| Disposal | Disposable |
Applications & Compatibility
- Routine gas detector calibration
- Scheduled bump testing programs
- Multi-detector maintenance workflows
- Industrial hygiene compliance programs
- Continuous safety monitoring operations
Compatible with portable and fixed gas detectors measuring CO, CH₄ (LEL), and O₂.
Why This Configuration Matters
- 20.9% O₂ replicates normal atmospheric conditions
- CO 100 PPM supports toxic gas calibration
- CH₄ at 20% LEL validates early detection response
- 221L capacity reduces downtime and cylinder swaps
- Ideal for continuous-use, compliance-driven environments
