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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 81-0093RK-03 Replacement - 50 PPM Carbon Monoxide, 25% LEL Pentane, 12% Oxygen, Balance Nitrogen (103L)

    RKI Instruments 81-0093RK-03 Replacement - 50 PPM Carbon Monoxide, 25% LEL Pentane, 12% Oxygen, Balance Nitrogen (103L)

    $145.00
    50 PPM Carbon Monoxide, 25% LEL Pentane, 12% Oxygen, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0093RK-03 Equivalent).
  2. RKI Instruments 81-0071RK-03 Replacement Calibration Gas - 5000 PPM Carbon Dioxide (103 Liter)

    RKI Instruments 81-0071RK-03 Replacement Calibration Gas - 5000 PPM Carbon Dioxide (103 Liter)

    $145.00
    5000 PPM Carbon Dioxide Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0071RK-03 Equivalent).
  3. RKI Instruments 81-0066RK-03 Replacement Calibration Gas - 200 PPM Carbon Monoxide (103 Liter)

    RKI Instruments 81-0066RK-03 Replacement Calibration Gas - 200 PPM Carbon Monoxide (103 Liter)

    $145.00
    200 PPM Carbon Monoxide Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0066RK-03 Equivalent).
  4. RKI Instruments 81-0065RK-03 Replacement Calibration Gas - 100 PPM Carbon Monoxide (103 Liter)

    RKI Instruments 81-0065RK-03 Replacement Calibration Gas - 100 PPM Carbon Monoxide (103 Liter)

    $145.00
    100 PPM Carbon Monoxide Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0065RK-03 Equivalent).
  5. RKI Instruments 81-0064RK-03 Replacement Calibration Gas - 50 PPM Carbon Monoxide (103 Liter)

    RKI Instruments 81-0064RK-03 Replacement Calibration Gas - 50 PPM Carbon Monoxide (103 Liter)

    $145.00
    50 PPM Carbon Monoxide Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0064RK-03 Equivalent).
  6. RKI Instruments 81-0004RK-03 Replacement Calibration Gas - 50% LEL Propane (103 Liter)

    RKI Instruments 81-0004RK-03 Replacement Calibration Gas - 50% LEL Propane (103 Liter)

    $145.00
    50% LEL Propane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0004RK-03 Equivalent).
  7. RKI Instruments 81-0072RK-03 Replacement Calibration Gas - 2.5% by volume Carbon Dioxide (103 Liter)

    RKI Instruments 81-0072RK-03 Replacement Calibration Gas - 2.5% by volume Carbon Dioxide (103 Liter)

    $145.00
    2.5% by volume Carbon Dioxide Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0072RK-03 Equivalent).
  8. RKI Instruments 81-0070RK-03 Replacement Calibration Gas - 2000 PPM Carbon Dioxide (103 Liter)

    RKI Instruments 81-0070RK-03 Replacement Calibration Gas - 2000 PPM Carbon Dioxide (103 Liter)

    $145.00
    2000 PPM Carbon Dioxide Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0070RK-03 Equivalent).
  9. RKI Instruments 81-0073RK-03 Replacement Calibration Gas - 15% by volume Carbon Dioxide (103 Liter)

    RKI Instruments 81-0073RK-03 Replacement Calibration Gas - 15% by volume Carbon Dioxide (103 Liter)

    $145.00
    15% by volume Carbon Dioxide Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0073RK-03 Equivalent).
  10. RKI Instruments 81-0078RK-03 Replacement Calibration Gas - 99.999% by volume Nitrogen (103 Liter)

    RKI Instruments 81-0078RK-03 Replacement Calibration Gas - 99.999% by volume Nitrogen (103 Liter)

    $145.00
    99.999% by volume Nitrogen Calibration Gas, 103 Liter Steel Cylinder (RKI Instruments 81-0078RK-03 Equivalent).
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