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Vicat Dry

No more irritating oil fumes! Download
Test methods
  • Vicat
Heat transfer
  • Oil-free

The Oil-Free Measurement Principle

Vicat Dry instruments are designed to determine the Vicat softening temperature (VST) and are primarily used in research and development, goods inwards checks and production monitoring. The oil-free measurement principle ensures clean, odor-free working conditions. The test sequence is completely automatic. Different versions of the instrument are available, with two or six testing stations according to requirements.

Advantages & Features

Advantages & Features

Functions, elements and interfaces
Automatic test sequence
Re-cooling the heat-transfer fluid


  • no fiddling with weights - loading is performed automatically
  • convenient PC control
  • instrument cools down quickly, assisted by a cryostat with closed coolant circuit
  • easy displacement calibration using gage-blocks
  • space-saving
  • small specimens are easy to handle
  • rapid re-cooling enables significant increase in throughput compared with oil Vicat tests


Determination of Vicat softening temperature (VST)

  • of thermoplastics as per ISO 306

Functions, elements and interfaces

  • built-in microprocessor-controlled electronics for temperature control and measured-value acquisition
  • fully automatic test-sequence
  • automatically controlled compressed-air re-cooling
  • connection for fluid cooling
  • safety thermostat
  • low heating of housing
  • safety switch prevents crush risk
  • serial interface for connecting a PC for test-control and data acquisition via ZwickRoell Roell testing software
  • integrated compensation for heat expansion
  • integrated weight sets, 10N and 50N

Automatic test sequence

Once the heating block has reached the starting temperature, the specimens are positioned in the measuring stations, the instrument is closed pneumatically and the test weight specified in the standards is automatically applied.

On completion of preheating under the influence of force, the displacement signals are zeroed (program-controlled) and warming of the heating block at the preset rate is started. As soon as the required penetration is attained at all stations, the heating is switched off and the test is ended.

Re-cooling is started automatically; the specimens can afterwards be removed.

Re-cooling the heat-transfer fluid

The instruments are equipped with compressed-air cooling as standard. If sufficiently cool compressed air is not available, the instruments can be cooled with water.

Technical Overview

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Learn more about HDT & Vicat

Determination of HDT VST plastics
ISO 306, ASTM D1525, ISO 75, ASTM D648
Determination of heat deflection temperature (HDT) and Vicat softening temperature (VST)
to Determination of HDT VST plastics
HDT and Vicat Testing Instruments
Standard-compliant testing to ISO 75, ISO 306, ASTM D1215 and ASTM D648.
The thermal resistance of plastics in many ranges of application is measured via heat deflection temperature (ISO 75 and ISO 306).
to HDT and Vicat Testing Instruments


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  • Product information: HDT/Vicat Dry PDF 1 MB