Product Description
120L 4-Gas Calibration Gas – 19.5% Oxygen OSHA Deficiency Threshold Blend
This 120 Liter reactive 4-gas calibration cylinder is engineered for large-scale safety programs requiring repeatable oxygen-deficiency alarm verification at the OSHA minimum safe limit of 19.5% oxygen.
Gas composition includes:
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Hydrogen Sulfide (H₂S) – 10 PPM
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Carbon Monoxide (CO) – 50 PPM
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Methane (CH₄) – 2.5% (50% LEL)
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Oxygen (O₂) – 19.5%
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Nitrogen Balance
The 19.5% oxygen concentration allows safety managers to confirm that oxygen sensors trigger correctly before confined space entry, while simultaneously validating toxic and combustible channels.
With 1050 PSI fill pressure and 4.2 cubic feet of capacity, the 120L format reduces cylinder changeouts and supports structured weekly or monthly calibration schedules across multiple detectors.
Gas Concentration Specifications
| Gas | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 10 PPM |
| Carbon Monoxide (CO) | 50 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 19.5% |
| Balance | Nitrogen |
Cylinder Specifications
| Specification | Detail |
|---|---|
| Cylinder Size | 120 Liters |
| Pressure | 1050 PSI |
| Valve Type | C-10 |
| Cylinder Material | Aluminum |
| Gas Reactivity | Reactive |
| Approximate Volume | 4.2 Cubic Feet |
Designed For High-Demand Compliance Programs
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Enterprise confined space entry programs
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Oil & gas production facilities
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Municipal utilities and wastewater treatment
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Industrial manufacturing plants
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Multi-unit gas detector fleets
Compatible with standard C-10 demand flow regulators used across major multi-gas monitor brands.
Why Choose the 120L 19.5% Configuration
• Confirms oxygen alarm activation at OSHA deficiency threshold
• High capacity minimizes replacement frequency
• Supports fleet-wide detector calibration
• Reactive formulation optimized for stable sensor response
If your program requires alternative oxygen levels, custom toxic gas ratios, or different cylinder specifications, our team can produce made-to-order blends to meet site requirements.
