Tips & Tricks

LFA Reference Materials

Please note when using reference samples with special dimensions that it is essential to maintain a diameter-to-thickness ratio of >5. Lower ratios might decrease accuracy. To ensure reliable test results, the thermal diffusivity should fall within ±3% in terms of accuracy.

The following tables show sets and individual reference materials for the determination of Thermal DiffusivityThermal diffusivity (a with the unit mm2/s) is a material-specific property for characterizing unsteady heat conduction. This value describes how quickly a material reacts to a change in temperature.thermal diffusivity and specific heat (cp).

Recommended reference materials are listed separately from those which differ in dimensions. These reference materials should be used to evaluate the diameter-to-thickness prior to the LFA measurement.
Please consider to adjust the reference materials to the sample holder you selected.