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  • 44 Liter-Hydrogen Sulfide 25 ppm/ Carbon Monoxide 100 ppm/ Methane 2.5% (50% LEL)/ Oxygen 20.9%/ Nitrogen

    • Hydrogen Sulfide (H₂S) 25 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL 4-Gas Calibration Gas – 44L 750 PSI C-10 Aluminum

    E-Gas Depot

    $213.40
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    SKU:
    155-5700-FX44
    Availability:
    3-5 Business Days + shipping time
    Weight:
    20.00 Ounces
    Width:
    2.90 (in)
    Height:
    10.60 (in)
    Depth:
    2.90 (in)
    Size:
    44L
    Gas Composition:
    H2S / CO / CH4 / O2
    Cylinder Specification:
    C-10
    Cylinder Material:
    Aluminum
    Gas Reactivity:
    Reactive
    Cylinder Pressure:
    750 psi
    Hydrogen Sulfide (H2S) Concentration:
    25 PPM
    Carbon Monoxide (CO) Concentration:
    100 PPM
    Methane (CH4) Concentration:
    2.5% (50% LEL)
    Oxygen (O2) Concentration:
    20.9%
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    Product Description

    H₂S 25 PPM / CO 100 PPM / CH₄ 2.5% (50% LEL) / O₂ 20.9% 4-Gas Calibration Gas – 44L 750 PSI

    This 4-gas calibration mixture contains:

    • Hydrogen Sulfide (H₂S) – 25 PPM

    • Carbon Monoxide (CO) – 100 PPM

    • Methane (CH₄) – 2.5% (50% LEL)

    • Oxygen (O₂) – 20.9%

    • Balance Gas – Nitrogen

    Designed for routine calibration and bump testing of portable multi-gas detectors operating in normal atmospheric oxygen conditions.

    Gas Composition

    H₂S 25 PPM / CO 100 PPM / CH₄ 2.5% (50% LEL) / O₂ 20.9%
    Balance: Nitrogen
    Gas Count: 4

    Cylinder Specifications

    Cylinder Size: 44L (1.5 Cubic Feet)
    Cylinder Pressure: 750 PSI
    Valve Type: C-10
    Cylinder Material: Aluminum
    Gas Reactivity: Reactive

    The 44L 750 PSI format offers a balanced capacity-to-weight ratio for field technicians and safety managers managing recurring bump testing schedules.

    Application Positioning

    This blend is ideal for:

    • Routine OSHA-required bump testing

    • Standard atmospheric calibration verification

    • Municipal safety programs

    • Utilities and wastewater facilities

    • Detector fleet maintenance

    Oxygen at 20.9% simulates ambient air conditions.
    Methane at 2.5% equals 50% LEL for combustible sensor verification.
    CO at 100 PPM aligns with common low-alarm calibration thresholds.

    Why Choose 100 PPM CO?

    Compared to 200 PPM blends, 100 PPM CO is commonly used for:

    • Lower alarm setpoint verification

    • Routine calibration without high-exposure simulation

    • Standard detector compliance testing

    Need Alternate Concentrations or Cylinder Sizes?

    We manufacture this blend across multiple pressures and volumes. Contact us for custom calibration gas configurations.

    Other Details

    Warranty 24 months

    Product Videos

    Custom Field

    Size 44L
    Gas Composition H2S / CO / CH4 / O2
    Cylinder Specification C-10
    Cylinder Material Aluminum
    Gas Reactivity Reactive
    Cylinder Pressure 750 psi
    Hydrogen Sulfide (H2S) Concentration 25 PPM
    Carbon Monoxide (CO) Concentration 100 PPM
    Methane (CH4) Concentration 2.5% (50% LEL)
    Oxygen (O2) Concentration 20.9%

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