Product Description
66L 4-Gas Calibration Gas – 20.9% Oxygen Balance for Detector Accuracy Verification
This 66 Liter reactive 4-gas calibration mixture is formulated for technicians requiring portable, field-ready calibration support with a standard atmospheric oxygen concentration of 20.9%.
Gas blend includes:
-
Hydrogen Sulfide (H₂S) – 10 PPM
-
Carbon Monoxide (CO) – 50 PPM
-
Methane (CH₄) – 2.5% (50% LEL)
-
Oxygen (O₂) – 20.9%
-
Nitrogen Balance
The 20.9% oxygen concentration replicates normal ambient air conditions, making this blend ideal for validating oxygen sensor response alongside toxic and LEL channels during routine bump tests and scheduled calibration cycles.
The 66L cylinder size offers a practical balance between portability and jobsite volume capacity.
Gas Concentrations
| Gas | Level |
|---|---|
| Hydrogen Sulfide (H₂S) | 10 PPM |
| Carbon Monoxide (CO) | 50 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 20.9% |
| Balance | Nitrogen |
Cylinder Specifications
| Specification | Detail |
|---|---|
| Cylinder Size | 66 Liters |
| Pressure | 1150 PSI |
| Valve Type | C-10 |
| Cylinder Material | Aluminum |
| Gas Type | Reactive |
| Approximate Volume | 2.3 Cubic Feet |
Common Applications
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Confined space entry monitoring
-
Multi-gas detector bump testing
-
Sensor drift verification
-
OSHA compliance documentation
-
Routine safety equipment maintenance
Compatible with most leading portable gas monitors from MSA, Industrial Scientific, Honeywell BW, RKI, and Dräger.
Why Choose the 66L Configuration
• Portable for field technicians
• Efficient for moderate testing schedules
• Reactive mixture balanced for stable sensor output
• Supports atmospheric oxygen calibration checks
If you require alternate concentrations, different oxygen levels, or custom cylinder configurations, contact our calibration gas specialists for fast formulation options.
