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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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RKI Instruments 81-0076RK-01 Replacement Zero Air - 20.9% Oxygen (34 Liter)
$62.0020.9% Oxygen (Zero Air) Calibration Gas, Balance Nitrogen, 34 Liter Steel Cylinder (RKI Instruments 81-0076RK-01 Equivalent). -
RKI Instruments 81-0090RK-01 Replacement - 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (34L)
$62.0050 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 34 Liter Steel Cylinder (RKI Instruments 81-0090RK-01 Equivalent). -
RKI Instruments 81-0081RK-01 Replacement Calibration Gas - 2000 PPM R-22 (34 Liter)
$62.002000 PPM R-22 Calibration Gas, Balance Air, 34 Liter Steel Cylinder (RKI Instruments 81-0081RK-01 Equivalent). -
RKI Instruments 81-0075RK-01 Replacement Calibration Gas - 10% by volume Oxygen (34 Liter)
$62.0010% by volume Oxygen Calibration Gas, Balance Nitrogen, 34 Liter Steel Cylinder (RKI Instruments 81-0075RK-01 Equivalent). -
RKI Instruments 81-0003RK-01 Replacement Calibration Gas - 25% LEL Propane (34 Liter)
$62.0025% LEL Propane Calibration Gas, Balance Air, 34 Liter Steel Cylinder (RKI Instruments 81-0003RK-01 Equivalent). -
RKI Instruments 81-0004RK-01 Replacement Calibration Gas - 50% LEL Propane (34 Liter)
$62.0050% LEL Propane Calibration Gas, Balance Air, 34 Liter Steel Cylinder (RKI Instruments 81-0004RK-01 Equivalent). -
RKI Instruments 81-0082RK-01 Replacement Calibration Gas - 2000 PPM R-12 (34 Liter)
$62.002000 PPM R-12 Calibration Gas, Balance Air, 34 Liter Steel Cylinder (RKI Instruments 81-0082RK-01 Equivalent). -
RKI Instruments 81-0084RK-01 Replacement Calibration Gas - 2000 PPM R-134A (34 Liter)
$62.002000 PPM R-134A Calibration Gas, Balance Air, 34 Liter Steel Cylinder (RKI Instruments 81-0084RK-01 Equivalent). -
RKI Instruments 81-0089RK-01 Replacement - 50 PPM Carbon Monoxide, 15% LEL Hexane, 12% Oxygen, Balance Nitrogen (34L)
$62.0050 PPM Carbon Monoxide, 15% LEL Hexane, 12% Oxygen, Balance Nitrogen, 34 Liter Steel Cylinder (RKI Instruments 81-0089RK-01 Equivalent). -
RKI Instruments 81-0065RK-01 Replacement Calibration Gas - 100 PPM Carbon Monoxide (34 Liter)
$62.00100 PPM Carbon Monoxide Calibration Gas, Balance Air, 34 Liter Steel Cylinder (RKI Instruments 81-0065RK-01 Equivalent).
