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Abstract
A method for measuring water evaporation from the skin is described. The method is based on the principle that a slow current of air is allowed to pass through a measuring chamber enclosing a 25 cm2 test area. The measuring chamber is applied to the skin. The moisture in the ingoing and the outgoing air is measured with a lithium chloride dew point sensing element, which proved to have special advantages. The differences in the moisture are registered on a recorder, and evaporation can be calculated in mg.cm-2.hr-1. The apparatus constructed has been found to give reliable and easily reproducible values for measurements from skin surfaces with a high degree of evaporation. The apparatus is intended primarily for measuring evaporation from burned skin during different phases of healing and for following the effect produced on evaporation by different methods of treatment. The method can probably be used also to study the normal physiology of the skin or for measurements in connection with patients suffering from different skin diseases.