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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 81-0090RK-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 81-0154RK-08 Replacement - 25 PPM Hydrogen Sulfide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (29L)
$165.0025 PPM Hydrogen Sulfide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 29 Liter Aluminum Cylinder (RKI Instruments 81-0154RK-08 Equivalent). -
RKI Instruments 81-0090RK-03 Replacement - 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (103L)
$145.0050 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0090RK-03 Equivalent). -
RKI Instruments 81-0090RK Replacement - 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (17L)
$50.0050 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0090RK Equivalent). -
RKI Instruments 81-0154RK-04 Replacement - 25 PPM Hydrogen Sulfide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (29L)
$165.0025 PPM Hydrogen Sulfide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 29 Liter Aluminum Cylinder (RKI Instruments 81-0154RK-04 Equivalent). -
RKI Instruments 81-0159RK-02 Replacement - 5 PPM Sulfur Dioxide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (58L)
$248.005 PPM Sulfur Dioxide, 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 58 Liter Aluminum Cylinder (RKI Instruments 81-0159RK-02 Equivalent). -
Industrial Scientific 1810-6914 Replacement - 25 PPM Hydrogen Sulfide, 50 PPM Carbon Monoxide, 32.4% LEL Methane, 18% Oxygen, Balance Nitrogen (58L)
$248.0025 PPM Hydrogen Sulfide, 50 PPM Carbon Monoxide, 32.4% LEL Methane, 18% Oxygen, Balance Nitrogen, 58 Liter Aluminum Cylinder (Industrial Scientific 18106914 Equivalent). RFID tag is not included. -
Industrial Scientific 1810-7847 Replacement - 100 PPM Carbon Monoxide, 40% LEL Methane, 19% Oxygen, Balance Nitrogen (103L)
$145.00100 PPM Carbon Monoxide, 40% LEL Methane, 19% Oxygen, Balance Nitrogen, 103 Liter Steel Cylinder (Industrial Scientific 18107847 Equivalent). RFID tag is not included. -
Industrial Scientific 1810-5825 Replacement - 75 PPM Hydrogen Sulfide, 200 PPM Carbon Monoxide, 25% LEL Methane, 15% Oxygen, Balance Nitrogen (Bump Gas)
$62.0075 PPM Hydrogen Sulfide, 200 PPM Carbon Monoxide, 25% LEL Methane, 15% Oxygen, Balance Nitrogen, 11L Bump Gas Cylinder (Industrial Scientific 18105825 Equivalent). RFID tag is not included. -
Industrial Scientific 1810-9164 Replacement - 10 PPM Hydrogen Sulfide, 100 PPM Carbon Monoxide, 2.5% Methane, 18% Oxygen, Balance Nitrogen (116L)
$445.0010 PPM Hydrogen Sulfide, 100 PPM Carbon Monoxide, 2.5% Methane, 18% Oxygen, Balance Nitrogen, 116 Liter Aluminum Cylinder (Industrial Scientific 18109164 Equivalent). RFID tag is not included.
