• Corrosiveness and Oxidation Stability Test Apparatus

Corrosiveness and Oxidation Stability Test Apparatus

Evaluates the ability of a lubricant to resist oxidation and the formation of corrosive acid compounds by subjecting a sample to accelerated oxidation conditions in a catalytic environment. The sample is maintained at elevated temperature and subjected to a controlled air flow while in the presence of a series of test specimens made of metals commonly found in actual service conditions.

  • Models for ASTM, Federal and IHC test methods
  • Six-sample testing capability
  • Solid aluminum block design
  • Microprocessor temperature control with digital display and over-temperature protection

Constant temperature block baths for corrosivity and oxidation stability determinations on hydraulic oils, aircraft turbine lubricants, transmission fluids and other highly refined oils. Insulated aluminum block provides safe, efficient performance at operating temperatures of up to 750°F (399°C). Microprocessor temperature control has °C/°F switchable digital setpoint and display. Operator and equipment are protected by an overtemperature control circuit which automatically interrupts power to the unit should block temperature exceed a programmed cut-off point. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information. Air flow is controlled at the specified rate by six individually adjustable flowmeters mounted on a common manifold. Includes inlet valve and outlet fitting for condenser water supply and support rack for glassware.

Conforms to the specifications of: A

STM D4636, D5968, D6594; FTM 791-5307, 791-5308; IHC BT-10; DIN 51394

Capacity: 6 test cells

Temperature Range: 125 to 750°F (51.7 to 399°C)

Temperature Control Stability: ±1°F (±0.5°C)

Air Flow Rate:

ASTM D4636/FTM 791-5307: 10L/h
FTM 791-5308: 3L/h and 5L/h (dual range flowmeters)
IHC BT-10: 3L/h (50mL/min.)

220-240V 50/60Hz, Single Phase, 15.9A

lxwxh,in.(cm): 321⁄2x141⁄2x411⁄2 (83x37x105)
Net Weight: 271 lbs (122.9kg)

Shipping Weight: 396 lbs (179.6 kg)

42x27x32 in. (106.7x68.6x81.3 cm)


  • 250-000-08F ASTM 8F Thermometer - Range: 30 to 760°F
  • 250-000-08C ASTM 8C Thermometer - Range: –2 to +400°C

ASTM D4636, D5968, D6594 and FTM 791-5307

  • K351-0-1 Sample Tube 
  • K351-0-2 Sample Tube Head 
  • K351-0-3 Air Tube 
  • K351-0-4 Thermocouple Tube 
  • K351-0-5 Condenser, Allihn Type 
  • K351-0-6 Oil Sampling Tube (for D4636) 
  • K351-0-7 Spacer 36
  • K351-0-8 PTFE Adapter 
  • K351-0-13 Oil Sampling Tube (for D5968 and FTM 791-5307)
  • K351-0-14 Specimen Hanger (for D6594)
  • K293-0-12 Thermocouple, Type J 
  • K29319 Digital Thermometer, 220-240V - Microprocessor based digital thermocouple thermometer with ten-channel input. Monitors Type J thermocouples from sample tubes.
  • K35090 Test Panel Assembly Fixture - Holds square-shaped metal specimens for tying with cord (for ASTM D4636 Alternate Procedure and FTM 791-5308)
  • K35095 Test Panel Assembly Fixture - Holds square-shaped metal specimens for tying with cord (for ASTM D5968)

FTM 791-5308

  • K350-0-23 Test Tube 
  • K350-0-24 Air Tube 
  • K350-0-25 Condenser 
  • K35090 Test Panel Assembly Fixture - Holds square-shaped metal specimens for tying with cord.


  • K353-0-1 Test Cell 
  • K353-0-2 Condenser 
  • K353-0-3 Air Tube 
  • K353-0-4 Ring Rod

Washer Shaped Specimens for ASTM D4636 Standard Procedure and for FTM 791-5307

  • K35110 Bronze
  • K35120 Mild Steel
  • K35130 Aluminum Alloy
  • K35140 Magnesium
  • K35150 Steel M50
  • K35160 Silver
  • K35170 Titanium

Square Shaped Specimens for ASTM D4636 Alternate Procedure and for FTM 791-5308

  • K35010 Copper
  • K35020 Mild Carbon Steel
  • K35030 Aluminum Alloy
  • K35040 Magnesium Alloy
  • K35050 Cadmium Plated Steel
  • K35060 Silver
  • K35070 Solid Cadmium (non standard)
  • K35080 Titanium (non standard)

Square Shaped Specimens for ASTM D5968 and D6594

  • K35010 Copper
  • K35011 Lead
  • K35012 Tin
  • K35013 Phosphor Bronze

Rectangular Shaped Specimens for IHC BT-10

  • K353-0-5 Aluminum
  • K353-0-6 Copper
  • K353-0-7 Steel
  • K353-0-8 Brass

Polishing Materials

  • 380-150-001 Silicone Carbide Paper, 150-grit, Pack of 50 sheets
  • 380-240-001 Silicone Carbide Paper, 240-grit, Pack of 50 sheets
  • 380-150-000 Silicone Carbide Grain, 150-grit, 1 lb package