A drying tube or guard tube is a tube-like piece of apparatus used to house a disposable solid desiccant, wherein at one end the tube-like structure terminates in a ground glass joint for use in connecting the drying tube to a reaction vessel, for the purpose of keeping the vessel free of moisture. The tube-like structure is often bent and can also widen to form a bulb/desiccant reservoir.
A drying tube or guard tube is a tube-like piece of apparatus used to house a disposable solid desiccant, wherein at one end the tube-like structure terminates in a ground glass joint for use in connecting the drying tube to a reaction vessel, for the purpose of keeping the vessel free of moisture. The tube-like structure is often bent and can also widen to form a bulb/desiccant reservoir.
Source: Wikipedia "Drying tube" · CC BY-SA 4.0
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