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Oxidation Stability Tester:

  • Semi-automatic oxidation stability tester for gasoline and aviation fuel
  • Digital PA 5-OBA programmable manometers and 4 test places for parallel testing
  • Available with liquid bath or dry-heat bath
Online price only | excl.incl. 0VAT
upon request
Purchasable online
in specific countries
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The semi-automatic OBA 1 is used to determine the oxidation stability (induction period) and the tendency to form gum (potential residue) under accelerated oxidation conditions.
OBA 1 is suitable for oxidation stability applications of gasoline and aviation fuel.

Key features

Benefits at a Glance

  • Digital PA 5-OBA programmable manometers
  • Pressure-certified oxidation vessels
  • 4 test places for parallel testing
  • PC-software for data handling

Convenient Operation

  • The PA 5-OBA is a programmable manometer with a digital display and pressure connection. It determines automatically the induction period and checks the leakage stability of the oxidation vessel before starting the test automatically.
  • Data can be transferred from the manometer to your PC via an USB interface (cable included)
  • The included PC-software PetroNet Standard allows to monitor the numerical and graphical data on the screen.
  • Convenient temperature reading with Pt1000 temperature sensor (optional) and correction of the induction period according to the used method

Customized User Flexibility

  • Available with liquid bath or dry-heat bath
  • Dongle to unlock the PA 5 Professional module of the PetroNet Standard software to allow full access to the programmable parameters of the PA 5 manometers (optional)
  • PA 5 manometer pressure calibrator (optional)
  • Dry-heat bath calibration set (optional)
  • Certified manometers available with manufacturer's calibration certificate or official (DKD) calibration certificate (optional)
  • Tool set to ease the pressure vessel opening and closing procedure (optional)
  • Support shelf for test vessel (optional)

Technical specifications

Application range up to 200 °C (OBA 1)
up to 120 °C (OBA 1/T)
Tempering Liquid bath, 45 L (OBA 1)
Dry-heat bath (OBA 1/T)
Test places 4
Pressure range measurement 0 bar to 14 bar or 1400 kPa or 203 psi
Resolution displayed 1 mbar / 0.1 °C
Internal memory 57,000 data sets
Oxidation vessel Stainless steel, certified for 40 bar,
static pressure at 100 °C
Interface USB
Power supply 115 V, 50 Hz/60 Hz, 1000 W or 230 V, 50 Hz/60 Hz, 2000 W (OBA 1)
115 V, 50 Hz/60 Hz, 900 W or 230 V, 50 Hz/60 Hz, 2300 W (OBA 1/T)
Dimensions (W x D x H) 430 mm x 430 mm x 900 mm (OBA 1)
900 mm x 600 mm x 900 mm (OBA 1/T)
Weight 31 kg (OBA 1)
66 kg (OBA 1/T)
Resolution 0.1 kPa





FTM 791-3352
FTM 791-3354


IP 40
IP 138
ISO 7536


JIS K 2276
JIS K 2287

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