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CTL19 - Auto Ignition Test Apparatus (AIT)

Determines hot and cool flame ignition temperatures in chemical liquids and solids.


  • Testing to ASTM / IEC / DIN standards is possible. Relevant oven supplied (see different designs below)
  • Compact oven size
  • Used in our own process safety test laboratories
  • Simple to use

auto ignition testauto ignition test

Auto Ignition Test Apparatus

The Auto Ignition Temperature Test is performed to enable determination of hot and cool flame auto ignition temperatures of a liquid chemical (and solid chemicals*) in air at atmospheric pressure in a uniformly heated vessel.

Auto Ignition is defined as the ignition of a material commonly in air as the result of heat liberation due to an exothermic oxidation reaction in the absence of an external ignition source such as a spark or flame.

The following standards (each with slight differences) are applicable to the test:

  • ASTM E659
  • EC test A15
  • DIN 51794
  • Other configurations

Within certain limitations, the test can also be used to determine the auto ignition of solid chemicals which readily melt and vaporise at temperatures below the test temperature.

Functional Specification & Deliverables

The ASTM Method spec is covered here. For DIN standard apparatus deliverables please contact us.

  • Mains supply: 220 - 240 V 50 Hz single phase furnace (other voltages are available)
  • 150 - 650 °C (standard operating range)
  • Capable of controlling the flask temperature within + / - 1 °C up to 350 °C and + / - 2 °C from 350 °C to 650 °C
  • Temperature uniformity is better than + / - 4 °C measured on the outside of an aluminium clad flask at three positions
  • 10 x round bottom borosilicate flasks
  • Data acquisition hardware and AIT software supplied
  • Supplied with vapour temperature thermocouple, spare thermocouple and sample injection syringe set
  • Pre-calibrated
  • 1 x instruction manual

Optional Extras

  • PC and LCD monitor (recommended). Client to specify required operating system requirements if any
  • Spare vessels for ASTM (round bottom) or DIN (conical)
  • Spare syringes
  • Spare thermocouples
  • Spare oven insulation
  • Training services