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As market leader in Petroleum Analyzers, Optimus Instruments provides innovative and cost-effective techniques for physical property testing, distillation and element analysis for almost 30 years. Great instruments combined with excellent after sales service and our worldwide unique ISO17025 accredation for verification makes Optimus Instruments a partner you can count on.


Delivery To be confirmed.

ROFOX4 - Automatic Oxidation Stability Tester (ASTM D525, D873)

The „ROFOX four” is a compact and automatic Oxidation Stability Tester with 4 independent test positions. Allowing its users to avoid the use of any liquids thanks to the solid ectric heating block.

- Every unit can be heated separately
- short warm-up time
- unattended operations possible
- Easy temperatre-calibration
- Pressure sensors and calibration are maintenance free

ASTM D525/D873

This apparatus is used to test the stability of aviation reciprocating, turbine, and jet engine fuels to form gum and deposits under accelerated aging conditions like heating. This process is called an oxidation process.

Main features:
• 4-unit device
• Electric heating blocks (no liquid bath)
• Compact design
• Independently temperature regulated test positions (4 temperature controllers)
• Short heating-up time
• Software-controlled test procedure
• Automatic data interpretation and report generation (selectable file formats)
• Data and test results will be archived in database
• Selectable device interface

Included in delivery:
• 1 ROFOX four Oxidation Stability Tester (ROFOX4)
• 1 ROFOX Interface Unit, USB (ROFINT-USB)
• 1 Power cable (CEE 7/7 – IEC), ˜2,5m (POWC25)
• 1 Data cable USB (USB-A / USB-B), 1,8m (CABUSB18)
• 1 Notebook with pre-installed OS and ROFCON Software, English (ROFPCN)
• 4 Oxidation vessel (OXIVES) incl. pressure sensor, burst disc, needle valve, male quick connector and
Connection cable
• 4 Glass sample container with cup (OXIGSC)
• 1 Oxygen pressure hose (OXICON), 2m/78,7” incl. female quick connector
• 1 Maintenance Kit (OXIMK4) incl. 1 Hex Key, 2 Air filter pads, 1 fuse T10A
• 1 Oxygen compatible grease, 50g (OXILUB50)