Product Description
66L 4-Gas Calibration Gas – 35 PPM CO Configuration with 18.0% O₂
This 66L reactive 4-gas calibration cylinder is formulated with 35 PPM Carbon Monoxide, supporting early-warning CO alarm validation and lower setpoint calibration programs.
Unlike standard 50 PPM CO blends, this configuration aligns with facilities that use reduced CO alarm thresholds for enhanced safety margins.
Gas Composition
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Hydrogen Sulfide (H₂S): 10 PPM
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Carbon Monoxide (CO): 35 PPM
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Methane (CH₄): 2.5% (50% LEL)
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Oxygen (O₂): 18.0%
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Nitrogen: Balance
The 18.0% oxygen concentration simulates active oxygen-deficient conditions below OSHA’s 19.5% threshold while maintaining realistic confined space validation parameters.
Cylinder Specifications
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Capacity: 66L
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Fill Pressure: 1150 PSI
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Valve Type: C-10
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Cylinder Material: Aluminum
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Gas Type: Reactive
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Approximate Volume: 2.3 Cubic Feet
The 1150 PSI configuration supports repeatable regulator performance and extended calibration cycles.
Ideal Applications
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Facilities using 35 PPM CO first-alarm setpoints
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Industrial hygiene compliance programs
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Oil & gas operations
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Utility confined space programs
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Manufacturing plant detector maintenance
Compatible with C-10 demand flow regulators used across major portable multi-gas detection systems.
Why Choose the 35 PPM CO Blend
• Supports lower CO alarm threshold validation
• Confirms oxygen-deficiency response at 18.0% O₂
• Validates toxic and combustible channels simultaneously
• Reactive blend engineered for stable detector performance
Custom CO concentrations and alternate oxygen setpoints available upon request.
