Browsing Czech translation

620.

A dehydrator is a piece of laboratory apparatus, often made of glass, and which serves to dry chemical matters; that is, to remove water or liquid from a sample.
[tab][tab][tab]In principle it is a glass bowl with cap that has a planar grinding, so that the bowl is air-tight. The dehydrator's lower part is ordinarily filled with a drying agent such as calcium chloride, silica gel, phosphoric anhydride or sulphuric acid. The sample to be dried is placed on a diaphanous cartridge of plastic or ceramic above the drying agent.
[tab][tab][tab]The drying agent is hygroscopic, which means that it dehumidifies its environment by absorbing water vapor. The dry atmosphere then takes up water from the sample to be dried.