Conference Contribution Details


RE Imhof & P Xiao.
Invited Lecture, 39th Annual Conference of the ASCC, Brisbane, March 2005.



The science and technology of TEWL measurement have evolved significantly in recent years. The science has evolved with the invention of the condenser-chamber measurement principle and the droplet method of calibration. The technology has evolved with several new instruments coming onto the market. As a result, the guidelines for TEWL measurement, which consider open-chamber instruments only, are now out of date and in need of revision. In addition, the accepted calibration method, based on permeable membranes and the ASTM-96 standard, has been shown to be unreliable, with systematic errors that depend on instrument design, flux and ambient conditions.

This talk will review these scientific developments and explore their impact on TEWL and related measurements in practice.


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