Test Tube Oven, EB 28HT

Test Tube Oven EB 28HT, with 4 cells × 6 test tubes and four temperatures.

The EB 28HT oven is designed for ageing tests according to ASTM D865 Rubber-Deterioration by Heating in Air (Test Tube Enclosure). The oven can also be used for testing in liquids according to ASTM D471 and ISO 1817 Effect of liquids. Glass tubes for both standards are included.

Glass tubes for air cooling are included and glass tubes for water cooling can be supplied as an option.


The oven performs well inside the apparatus requirements in ASTM D865, ASTM D471 and ISO 1817.

Temperature range

+40 °C to +300 °C

Important specifications

  • Temperature variation in time ± 0,5 °C
  • Temperature variation in space ± 0,5 %
  • Temperature indicator with sensor in four test tubes
  • Temperature controller with 0,1°C set point (PLC)
  • Adjustable upper and lower temperature limits with alarm (PLC)
  • Fixed over temperature fuse
  • Controlled from a micro PLC, with a colour touch screen
  • Test names can be given in the PLC
  • Improved insulation reduces energy consumption, environmental impact and cost
  • Cooling channels in the casing for low surface temperature
  • Indication of power failure (PLC)
  • Run-time meter (PLC)
  • Countdown timer (PLC)
  • Alarm history (PLC)

Included accessories

  • 24 pc Glass Tubes for ageing – EB 11.01
  • 24 pc Glass Tubes for ASTM D865 – EB 11.02.3 (incl. the corks: 4 pc EB 11.02.2 and 20 pc EB 11.02.1)
  • 24 pc Glass Tubes for ASTM D471 – EB 11.02.6 (incl. the corks: 4 pc EB 11.02.5 and 20 pc EB 11.02.4)
  • 50 pc of ceramic beads – EB 11.03
  • Necessary tools (e.g. stylus pen for PLC touch screen)
  • Accredited calibration including certificate
  • Manual in English

Options for EB 28HT

  • EB-P – Ramp function for temperature settings in the PLC
  • EC 11 – Monitor Software
  • ED 04 – Computer (Windows)
  • ED 06 – Uninterruptible Power Supply (UPS), recommended for the computer to eliminate disturbances from power failures up to 30 minutes
  • Network cable

More information

Download product brochure: Elastocon ageing ovens.pdf

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