Test Method
Provides an indication of the tendency of gasoline and aviation fuels to form gum in storage. The sample is oxidized inside a stainless steel pressure vessel initially charged with oxygen at 100psi ( 689kPa) and heated in a boiling water bath. The amount of time required for a specified drop in pressure ( gasoline) or the amount of gum and precipitate formed after a specific aging period ( aviation fuels) is determined.

Features and Benefits
� Water/ Liquid baths conforming to ASTM and related specifications. Constant temperature baths for heating K10500 Oxidation Pressure Vessels in accordance with ASTM specifications.

Solid Block Oxidation Baths
Solid block baths meet temperature control and other requirements of ASTM and related measurements. While aluminum block design offers operating advantages over the standard boiling water bath, it should be noted that many applicable specifications for this test call for a liquid bath medium. Please refer to the test method for the specific requirements.

K10400 Oxidation Stability of Fuels, Water/ Liquid Baths
Two different models, both equipped with low liquid-level controllers in accordance with the latest ASTM specifications. Two-unit water analog-controlled water bath can be flush mounted in a table top if desired, and is equipped with an overflow standpipe/ drain to maintain the proper depth when the pressure vessels are inserted, and a plated brass reflux condenser to minimize evaporation loss.

The four/ six-unit model can be used with water or oil as a bath medium, and has microprocessor temperature control that provides quick temperature stabilization without overshoot. Dual LED displays provide setpoint and actual temperature values in ° C/ ° F format. A built-in overtemperature control circuit interrupts power should the bath temperature exceed a programmed cut-off point. Both models feature double-wall insulated construction with stainless steel tanks, support racks and port covers. Order thermometer separately. The four/ six unit model can be ordered with interchangeable racks for performing the ASTM D942, ASTM D323 and D1298 test methods. Please contact your Koehler representative for additional information

Communications software ( RS232, etc.) ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information.

Specifications
Conforms to the specifications of: ASTM D525, D873; IP 40, IP 138; ISO 7536; DIN 51780, 51799; FTM 791-3352, 791-3354; NF M 07-012, 07-013

Maximum Temperature
Two-Unit Liquid Bath: boiling water
Four/ Six-Unit Liquid Bath: 250° F ( 121° C)