The Micro-Determination of Residual Moisture in Freeze-Dried Biological Materials

Abstract

SummaryA micro-drying method is described, which is simple, rapid and reproducible. It has been shown to give results in reasonable agreement with the Karl Fischer method, and with the vapour-pressure method. The results on samples of low moisture content are, however, considerably higher than those by the so-called American standard method. The method has been in routine use for over 3 years.