Shop by Brand - RKI Instruments Replacement Calibration Gas

We've made it easy for you to find your equivalent calibration gas. Just enter your part number in the search box (top right of every page). Or use the filters in the left column to narrow in on your calibration gas. Save up to 50% of the cost of brand name gases. We supply identical mixtures with ISO and NIST certification.

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  1. RKI Instruments 81-0149RK-02 Replacement Calibration Gas - 5 PPM Hydrogen Sulfide (58 Liter)

    RKI Instruments 81-0149RK-02 Replacement Calibration Gas - 5 PPM Hydrogen Sulfide (58 Liter)

    $150.00
    5 PPM Hydrogen Sulfide Calibration Gas, Balance Nitrogen, 58 Liter Aluminum Cylinder (RKI Instruments 81-0149RK-02 Equivalent).
  2. RKI Instruments 81-0185RK-02 Replacement Calibration Gas - 0.5 PPM Phosphine (58 Liter)

    RKI Instruments 81-0185RK-02 Replacement Calibration Gas - 0.5 PPM Phosphine (58 Liter)

    $351.00
    0.5 PPM Phosphine Calibration Gas, Balance Nitrogen, 58 Liter Aluminum Cylinder (RKI Instruments 81-0185RK-02 Equivalent).
  3. RKI Instruments 81-0159RK-02 Replacement - 5 PPM Sulfur Dioxide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (58L)

    RKI Instruments 81-0159RK-02 Replacement - 5 PPM Sulfur Dioxide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (58L)

    $248.00
    5 PPM Sulfur Dioxide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 58 Liter Aluminum Cylinder (RKI Instruments 81-0159RK-02 Equivalent).
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