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    • Explore Categories: Fire & Rescue Hazmat Law Enforcement EMS & Medical Oil & Gas FarrWest Originals
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    Portagas

    NO2 single-gas span (5 / 10 ppm)

    NO2 single-gas span (5 / 10 ppm)

    Portagas
    Nitrogen-dioxide span gas for NO2 sensor calibration
    $0.00
    O2 high-span (20.9% / 25%)

    O2 high-span (20.9% / 25%)

    Portagas
    Elevated-oxygen span cylinders for O2 sensor span verification
    $0.00
    O2 zero gas (100% N2)

    O2 zero gas (100% N2)

    Portagas
    Pure-nitrogen cylinder for O2 sensor zero and oxygen-deficiency check
    $0.00
    Portagas 100 Series Preset Fixed-Flow Regulator (0.5 LPM)

    Portagas 100 Series Preset Fixed-Flow Regulator (0.5 LPM)

    Portagas
    Portagas 100 Series Preset Fixed-Flow Regulator delivers constant 0.5 LPM calibration gas flow for diffusion-instrument testing and bump testing as cylinder pressure drops.
    $0.00
    Portagas Demand-Flow Regulator

    Portagas Demand-Flow Regulator

    Portagas
    The Portagas Demand-Flow Regulator is an on-demand regulator for pump-drawn detectors and docking stations that delivers gas only as the pump calls.
    $0.00
    PortaGreen 4-Gas "Quad Mix" Cylinder (H2S/CO/CH4-LEL/O2)

    PortaGreen 4-Gas “Quad Mix” Cylinder (H2S/CO/CH4-LEL/O2)

    Portagas
    NIST-traceable 4-gas mix (e.g., 25 ppm H2S, 100 ppm CO, 2.5% CH4 = 50% LEL, 18% O2, bal. N2) in 34L/58L/116L; matched to BW, RKI, RAE, Crowcon, MSA.
    $0.00
    PortaGreen 4-Gas Pentane-LEL Quad Mix

    PortaGreen 4-Gas Pentane-LEL Quad Mix

    Portagas
    Pentane-based 4-gas span mix for detectors calibrated on pentane.
    $0.00
    PortaGreen CO Single-Gas Cylinder (50/100 ppm)

    PortaGreen CO Single-Gas Cylinder (50/100 ppm)

    Portagas
    Carbon-monoxide span gas in nitrogen for CO detector calibration and bump testing.
    $0.00
    PortaGreen H2S Single-Gas Cylinder (25 ppm)

    PortaGreen H2S Single-Gas Cylinder (25 ppm)

    Portagas
    NIST-traceable 25 ppm hydrogen sulfide in nitrogen — core oilfield/sour-gas calibration gas.
    $0.00
    PortaGreen Isobutylene VOC/PID Span Gas (100 ppm)
    This product has multiple variants. The options may be chosen on the product page

    PortaGreen Isobutylene VOC/PID Span Gas (100 ppm)

    Portagas
    PortaGreen Isobutylene VOC/PID Span Gas is a 100 ppm calibration gas for photoionization detectors and VOC monitors.
    $0.00
    PortaGreen Methane Combustible-LEL Cylinder (2.5% / 50% LEL)

    PortaGreen Methane Combustible-LEL Cylinder (2.5% / 50% LEL)

    Portagas
    Methane-in-air/nitrogen combustible span gas for LEL sensor calibration.
    $0.00
    PortaGreen Oxygen Single-Gas Cylinder

    PortaGreen Oxygen Single-Gas Cylinder

    Portagas
    O2 span/zero cylinders (18% span, or 0%/N2 for oxygen-deficiency/zero) to verify O2 sensors.
    $0.00

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