TO10 Thermal Oxidation Stability Test Rig​



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Thermal Oxidation Stability Test Rig

ASTM D3241

ASTM D1655

IP 323

ISO 6249


DEF STAN 91-091



The ASTM D3241 / IP 323 Thermal Stability test is one of the most important tests for the jet fuel quality. This test method was inherently limited due to the subjectivity in the color standard for tube deposit rating


Recently advanced testing metrics (called metrological method) for quantifying the thermal stability characteristics of jet fuels was declared the referee technique by jet fuel specification bodies.


This new approach highlighted the weaknesses of the existing thermal jet fuel oxidation test rigs. By precisely mapping the thermal oxidation deposit on the surface of the aluminum tube, it became possible to identify issues with existing test rigs that were undetectable with the visual (VTR) rating.


Based on these finding, AD Systems developed a new jet fuel thermal oxidation test rig (TO10) that ensures perfect fuel preparation, perfect fuel flow control, a perfect heater tube temperature profile and perfect thermal deposit quantification with the Deposit Rater - DR10.




For the development of this innovative instrument, all the parameters influencing the accuracy of the D3241 / IP323 test method have been identified. For each of these parameters an innovative and reliable solution has been developed. This very successful apparatus is unmatched in the market


The preparation of the test is simplified. No tools are needed for assembly and the heating tube mounting. An extremely intuitive teaching software makes it possible to very quickly initiate a test and if necessary to follow step by step its progress.


ASTM D3241

ASTM D1655

ASTM D7566

IP 323

ISO 6249

DEF STAN 91-091



Based on its flexibility, its robustness and reliability, the TO10 is designed for any type of applications, research, civilian and military fuel certification.



  • State of the art automation level
  • Dual 5 mL syringe fuel pumping system, perfect fuel flow control, no pulse
  • Automatic fuel aeration control
  • Didactic and intuitive man-machine interface
  • Independant bus bar temperature control, no cooling liquid
  • DR10 - ITR connectivity for automatic result storage
  • No operator exposure to fuel vapor with safety door and fume extraction




Test method

ASTM D3241, IP 323, ISO 6249

Up to 21 programmable test methods


Test Temperature

Programmable from 100°C up to 380°C


Differential Pressure

0 - 750 mmHg (automatically bypassed at +700 mmHg)


Test time Range

Programmable from 4 to 600 minutes


Fuel Aeration

Programmable time, automatic air flow control


Aeration Flow rate

Programmable or according to test method, 1.5 L / min


Air Flow Humidity

Humidity sensor with displayed message for dessicant replacement


Heater tube temperature measurement

Thermocouple Type K, class 1


Fuel Flow

Dual 5 mL syringe, maintenance free, programmable fuel flow rate or according to test method

Accuracy ±1%

No flow pulse or peak


Bus Bar Temperature Control

Independent and programmable, each bus bar temperature can be adjusted

No liquid cooling circulation

Peltier modules + heat pipe technology


Heater tube section assembling

Special gauge to quickly and perfectly position the heater tube


Fuel vapor handling

Dedicated compartment with sliding doors acting like fume hood encompassing beakers and heater tube section, connectable to a fume extractor


Diagnostic and Service

Dedicated service menu with a flow chart layout with ability to click on each symbolic element to check its operation


DR10 - ITR connectivity

Via Ethernet port RJ45

Full test results can be automatically transferred from the DR10 to the TO10


Results storage

Result database

Limited only to capacity of external device


LAN connectivity

Ethernet port RJ45


Printer output

USB (printer is optional)


Data output

USB (2), Ethernet


Dimensions (mm)

440 x 600 x 670

(17" x 23" x 26")



60 kg (133lbs.)



100 to 240V - 8 A - 50/60Hz


Operating temperature

From +10 to +35°C


Relative humidity

20% to 90% non-condensing