Quasikontinuierliche Bestimmung der Alkoholkonzentration in Fermentationsmedien

A measuring device for the quasicontinuous determination of volatile substances in aqueous liquids, especially alcohols (methanol or ethanol) in fermentation media is presented. The working principle and the construction of this instrument are described. Measurements are possible in a concentration range between 0.1 and 150 g/l. The measuring device is suited for industrial processes as well as for laboratory use.