Boiling tube

boiling tube

are designed to be wide enough to allow substances to boil violently as opposed to a test tube, which is too narrow; a boiling liquid can explode out of the end of test tubes when they are heated, as there is no room for bubbles of gas to escape independently of the surrounding liquid. This phenomenon is called Bumping.

Boiling tubes are made from borosilicate glass that can withstand high temperatures.[1]

References

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