What is a thistle tube and is it used?

Answer 1

A thistle tube is a piece of laboratory glassware consisting of a shaft of tube, with a reservoir and funnel-like section at the top. Thistle tubes are typically used by chemists to add liquid to an existing system or apparatus.

The thistle tube shaft is designed to allow insertion through a small hole present in some stoppers, permitting the tube to be inserted into a container such as an Erlenmeyer flask.

Answer 2

This is a long tube with a bulb at one end, large enough to be able to pour liquids into. It is used to introduce liquids into a flask that is usually holding a solid so that the two can react together, especially if one of the products of the reaction is a gas (eg zinc and dilute hydrochloric acid to produce zinc chloride solution and hydrogen gas). As the thistle tube is long, after introducing the liquid the level of liquid in the flask rises above the end of the tube so that it acts as a seal, so any gas evolved can be channelled out of the flask through a sidearm tube to be collected, and not back up through the thistle tube.

Answer 3

A laboratory glassware that consists of a shaft of tube with a funnel-like section at the top and a reservoir is called thistle tube. It is often used in adding small portions of liquids to an exact position.

Answer 4

Thistle tubes are used by scientists to add liquids into flasks carefully; they are mainly used for inserting liquid into Erlenmeyer (conical) flasks which have a stopper in them. The reservoir on the top is mainly so the liquid can be poured in easily, and the shape of such reservoir is so that liquid doesn't spill over the sides.

Answer 5

A thistle tube is a laboratory glassware which contains a funnel. Hence, it is used for filtering purposes.

Answer 6

Thistle tubes are used to add liquids to a very precise location. Some have taps which allow precisely measured quantities of liquid to be added.

Answer 7

For separating liquids