Laboratory freeze dryer

A vacuum trap useful as a laboratory freeze dryer in which the condensing surface is formed by an aluminum container. The surface is cooled by the snow formed when high pressure carbon dioxide gas is expanded into the container. A piston in the container rises and falls in response to the level of t...

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Hauptverfasser: BROADWIN, SAMUEL M
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Sprache:eng
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creator BROADWIN
SAMUEL M
description A vacuum trap useful as a laboratory freeze dryer in which the condensing surface is formed by an aluminum container. The surface is cooled by the snow formed when high pressure carbon dioxide gas is expanded into the container. A piston in the container rises and falls in response to the level of the snow and activates a switch to stop and start respectively the introduction of gas into the container.
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subjects BLASTING
DRYING
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
title Laboratory freeze dryer
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