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  • 221 Liter-Carbon Monoxide 200 ppm/ Methane 2.5% (50% LEL)/ Oxygen 18.0%/ Nitrogen

    • Carbon Monoxide (CO) 200 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 18.0% / Nitrogen (N₂) BAL Calibration Gas – 221L 250 PSI CGA-165 Steel

    E-Gas Depot

    $145.00
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    SKU:
    39-7500-221L
    Availability:
    3-5 Business Days + shipping time
    Weight:
    100.80 Ounces
    Width:
    9.00 (in)
    Height:
    16.25 (in)
    Depth:
    9.00 (in)
    Size:
    221L
    Gas Composition:
    CO / CH4 / O2
    Cylinder Material:
    Steel
    Cylinder Pressure:
    250 PSI
    Gas Reactivity:
    Non-Reactive
    Carbon Monoxide (CO) Concentration:
    200 PPM
    Methane (CH₄) Concentration:
    2.5% (50% LEL)
    Oxygen (O2) Concentration:
    18.0%
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    Product Description

    CO 200 PPM / CH₄ 2.5% (50% LEL) / O₂ 18.0% Calibration Gas – 221L Cylinder

    This calibration gas blend contains Carbon Monoxide (CO) 200 PPM, Methane (CH₄) 2.5% (50% LEL), and Oxygen (O₂) 18.0%, balanced in nitrogen to simulate reduced oxygen environments commonly encountered in confined spaces while maintaining accurate multi-gas detector calibration. Supplied in a 221L steel cylinder at 250 PSI with a CGA-165 valve, this disposable configuration is designed for extended calibration cycles and reduced cylinder change frequency.

    Cylinder & Mixture Details

    • Cylinder Size: 221L (7.5 Cubic Feet)
    • Cylinder Pressure: 250 PSI
    • Cylinder Material: Steel
    • Valve Type: CGA-165
    • Gas Reactivity: Non-Reactive
    • Balance Gas: Nitrogen (N₂)

    Applications & Use Cases

    • High-volume calibration in reduced oxygen environments
    • Confined space entry safety programs
    • Detector response validation under oxygen-depleted conditions
    • Industrial hygiene and compliance workflows

    Why This Gas Blend

    • 200 PPM CO supports lower-range toxic gas calibration
    • Methane at 50% LEL for combustible hazard simulation
    • 18.0% oxygen reflects real-world reduced oxygen conditions
    • Extended-use cylinder reduces operational interruptions

    Custom Gas Mix Available

    We manufacture calibration gas mixtures tailored to your application. Contact us for alternate oxygen levels, concentrations, or cylinder configurations.

    Other Details

    Warranty 48 months

    Product Videos

    Custom Field

    Size 221L
    Gas Composition CO / CH4 / O2
    Cylinder Material Steel
    Cylinder Pressure 250 PSI
    Gas Reactivity Non-Reactive
    Carbon Monoxide (CO) Concentration 200 PPM
    Methane (CH₄) Concentration 2.5% (50% LEL)
    Oxygen (O2) Concentration 18.0%

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