null

Call Toll Free 1-833-386-9248 for accredited gas questions.

  • 66 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 – 66L 1150 PSI

    E-Gas Depot

    $259.60
    (No reviews yet) Write a Review
    SKU:
    155-5700-FX66
    Availability:
    3-5 Business Days + shipping time
    Weight:
    20.00 Ounces
    Width:
    2.90 (in)
    Height:
    10.60 (in)
    Depth:
    2.90 (in)
    Size:
    66 L
    Gas Composition:
    H2S / CO / CH4 / O2
    Cylinder Specification:
    C-10
    Cylinder Material:
    Aluminum
    Gas Reactivity:
    Reactive
    Cylinder Pressure:
    1150 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%
    Adding to cart… category.add_cart_announcement

    Product Description

    H₂S 25 PPM / CO 100 PPM / CH₄ 2.5% (50% LEL) / O₂ 20.9% 4-Gas Calibration Gas – 66L Cylinder

    This 4-gas calibration blend contains:

    • Hydrogen Sulfide (H₂S) – 25 PPM

    • Carbon Monoxide (CO) – 100 PPM

    • Methane (CH₄) – 2.5% (50% LEL)

    • Oxygen (O₂) – 20.9%

    • Balance Gas – Nitrogen

    Formulated for calibration and bump testing of portable multi-gas detectors operating under standard 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: 66L (2.3 Cubic Feet)
    Cylinder Pressure: 1150 PSI
    Valve Type: C-10
    Cylinder Material: Aluminum
    Gas Reactivity: Reactive

    The 66L 1150 PSI format provides strong capacity while remaining manageable for field technicians and maintenance departments.

    Application Positioning

    Unlike blends containing reduced oxygen (e.g., 17.0% O₂), this 20.9% oxygen formulation simulates normal atmospheric conditions, making it suitable for:

    • Routine bump testing

    • Standard calibration intervals

    • Detector verification without oxygen-deficiency triggering

    • General confined space safety programs

    Methane at 2.5% represents 50% LEL for proper LEL sensor verification.
    CO at 100 PPM aligns with common alarm setpoint testing levels.

    Ideal For

    • Municipal safety departments

    • Utilities and wastewater facilities

    • Industrial plant maintenance teams

    • Safety managers maintaining fleet detectors

    Need a Different Oxygen Level or CO Concentration?

    We manufacture calibration gases across multiple oxygen and CO concentration ranges. Contact us for alternate specifications or custom blends.

    Other Details

    Warranty 24 months

    Product Videos

    Custom Field

    Size 66 L
    Gas Composition H2S / CO / CH4 / O2
    Cylinder Specification C-10
    Cylinder Material Aluminum
    Gas Reactivity Reactive
    Cylinder Pressure 1150 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%

    Product Reviews

    Write a Review