Koehler K12290 Oxidation Stability Apparatus 8-Place and 12-Place Bath

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21 Sep 2021
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United States
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1 unit

Spesifikasi Koehler K12290 Oxidation Stability Apparatus 8-Place and 12-Place Bath


Constant temperature baths with solid state temperature control, calibrated flowmeters and condenser water manifold for oxidation stability tests on fuels and lubricants. Individual flowmeters and control valves for each oxidation cell deliver air flow at the rate of 3L/h. Condenser water manifold has individual control valves for each cell. Microprocessor PID control provides quick temperature stabilization without overshoot, and the bath is protected by a redundant overtemperature control circuit that interrupts power should bath temperature exceed a programmed cut-off point. Display provides actual setpoint temperature values in °C/°F format.

Test Method

Evaluates oxidation stability by subjecting the sample to a temperature of 95°C in the presence of oxygen or dry air. For inhibited mineral oils, the sample is reacted with oxygen in the presence of water and an iron-copper catalyst.


  • Eight and twelve-place liquid baths for benchtop placement

  • Conforming to ASTM and related test method specifications

  • Special baths for ASTM D2893 and AOCS CD12-57 tests


Conforms to the specifications of: ASTM D943, D2274, D2893*, D4310, D6158; AOCS CD12-57, DIN 51586, 51587; ISO 4263, ISO 12205; NF M 07-047; NF T 60-150

Test Capacity: 8 or 12 oxidation cells

Temperature Range: ambient to 212°F (100°C)

Temperature Control Stability: ±0.2°F (±0.1°C)

Bath Medium: white technical oil

Bath Capacity:

8-place model: 10 gal (37.8L)

12-place model: 19 gal (71.9L)

Additional Accessories

  • K12281 Oxidation Cell Assembly for ASTM D943 and D4310 Includes oxidation cell, condenser, oxygen delivery tube, thermometer bracket, oil level indicator strip, syringe sampling tube, sampling tube holder, spacer,

  • PTFE stopper and O-rings

  • K122-0-18 Oxygen Delivery Tube

  • K122-0-19 Oxidation Test Tube

  • K122-0-20 Condenser

  • K122-0-21 Thermometer Bracket

  • K122-0-22 Oil Level Indicator Strip

  • K122-0-23 Syringe Sampling Tube Holder

  • K122-0-27 PTFE Stopper

  • K122-0-28 Syringe Sampling Spacer

  • K122-0-30 Syringe Sampling Tube

  • AS568-009-V14 O-rings

  • K12210 Catalyst Coil Low-metalloid steel wire and electrolytic copper wire wound in a double spiral conforming to ASTM specifications. Packed in a sealed glass tube with a nitrogen atmosphere. Ready for use.

  • K24000 Wire Coiling Mandrel Mounts on bench for winding steel and copper wire into catalyst coils meeting ASTM specifications.

  • K12250 Steel Wire Low metalloid steel wire, 0.0625" (1.59mm) diameter, for catalyst coils. Supplied in 1000 ft (304.8m) lengths.

  • K12260 Copper Wire Electrolytic copper wire, 0.064" (1.63mm) diameter, for catalyst coils. Supplied in 1000 ft (304.8m) lengths.

  • 380-100-001 Silicone Carbide Paper - Used to polish steel and copper wire prior to winding into catalyst coils. 100 grit.

  • 250-002-001 Oxidation Cell Thermometer; Range: 80 to 100°C. For ASTM D943 and D4310.

  • 250-000-40C ASTM 40C Thermometer; Range: 72 to 126°C. For constant temperature baths.

Electrical Requirements

8-place model: 115V 60Hz, Single Phase, 13.0A; 220-240V 50/60Hz, Single Phase, 6.8A

12-place model: 115V 60Hz, Single Phase, 32.6A;220-240V 50/60Hz, Single Phase, 17.0A

Alat Laboratorium Umum

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