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the laboratory
Лаборатория
Dernière mise à jour : 2011-10-23
Fréquence d'utilisation : 1
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laboratory clamps make it easier to hold many kinds of tools.
аз.
Dernière mise à jour : 2011-10-23
Fréquence d'utilisation : 1
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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. \t\t\tin 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. \t\t\tthe 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.
аз аз аз.
Dernière mise à jour : 2011-10-23
Fréquence d'utilisation : 1
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