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. 2008 Feb;55(2 Pt 1):728-32.
doi: 10.1109/TBME.2007.912651.

Gravimetric method for in vitro calibration of skin hydration measurements

Ørjan G Martinsen  1 , Sverre Grimnes, Jon K Nilsen, Christian Tronstad, Wooyoung Jang, Hongsig Kim, Kunsoo Shin, Majid Naderi, Frank Thielmann
Affiliations

Gravimetric method for in vitro calibration of skin hydration measurements

Ørjan G Martinsen et al. IEEE Trans Biomed Eng. 2008 Feb.

Abstract

A novel method for in vitro calibration of skin hydration measurements is presented. The method combines gravimetric and electrical measurements and reveals an exponential dependency of measured electrical susceptance to absolute water content in the epidermal stratum corneum. The results also show that absorption of water into the stratum corneum exhibits three different phases with significant differences in absorption time constant. These phases probably correspond to bound, loosely bound, and bulk water.

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