K12200 Oxidation Stability Apparatus, 8- & 12-Unit


Test Method
Evaluates oxidation stability by subjecting the sample to a temperature of 95C 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.

Features and Benefits

• Conforming to ASTM and related test method specifications


K12200 Oxidation Stability Apparatus, 8- & 12-Unit
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. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Double-wall insulated baths are equipped with electronic solid state temperature control, copper immersion heaters and a 1/20 hp circulation stirrer to maintain temperature uniformity of 0.2C. Stainless steel bath interior has a built-in support rack and overflow/drain to immerse the test cells at the required depth. Order oxidation cell glassware and accessories separately.

Conforms to the specifications of: ASTM D943, D2274, D2893*, D4310, D6158; AOCS CD12-57**, DIN 51586, DIN 51587; ISO 4263, ISO 12205
*Modified versions of this equipment are available for ASTM D2893.
**“Oxidation Characteristics of Extreme Pressure Lubricating Oils” and AOCS CD12-57 “Fat Stability-Active Oxygen Method.” Information will be furnished upon request.

Test Capacity: 8 or 12 oxidation cells

Temperature Range: ambient to 212F (100C)

Temperature Control Stability: 0.2F (0.1C)

Bath Medium: white technical oil

Bath Capacity:
8-place model: 10 gal (37.8L)
12-place model: 19 gal (71.9L)

Electrical Requirements
8-place model:
115V, 50/60Hz, Single Phase, 13.0A
220-240V, 50/60Hz, Single Phase, 6.8A
12-place model:
115V, 50/60Hz, Single Phase, 32.6A
220-240V, 50/60Hz, Single Phase, 17.0A

Dimensions lxwxh,in.(cm)
8-place model: 17.5x25x42 (44x64x107)
12-place model: 25.5x24x42 (65x61x107)

Shipping Information:
Shipping Weight:
8-place model: 137 lbs (62.1kg)
12-place model: 213 lbs (96.6kg)
8-place model: 29 Cu. ft.
12-place model: 29 Cu. ft.

Ordering Information



Product Description

Electrical Requirements


Oxidation Stability Apparatus, 8-Unit

115V 50/60Hz


Oxidation Stability Apparatus, 8-Unit

220-240V 50/60Hz


Oxidation Stability Apparatus, 12-Unit

115V 50/60Hz


Oxidation Stability Apparatus, 12-Unit

220-240V 50/60Hz




Product Description

ASTM D943, D4310, and D2274 Accessories
For ASTM D2274, order one each K122-0-18 Oxygen Delivery Tube, K122-0-19 Oxidation Test Tube, and K122-0-20 Condenser for each cell.


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,


Oxygen Delivery Tube


Oxidation Test Tube




Thermometer Bracket


Oil Level Indicator Strip


Syringe Sampling Tube Holder


PTFE Stopper


Syringe Sampling Spacer


Syringe Sampling Tube



Iron-Copper Catalyst. For ASTM D943 and D4310.


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.


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


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


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


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



Oxidation Cell Thermometer. For ASTM D943 and D4310.
Range: 80 to 100C.


ASTM 40C Thermometer. For constant temperature baths.
Range: 72 to 126C.


When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.