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What a test tube brush and how is it used?

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Answer:

It is a device, made with nylon bristles attached to a twisted-wire shaft, used to knock the bottoms out of test tubes. Or at least it was when I was in high school chem class.

It is a brush that is long and narrow to clean the inside of glassware, in particular test tubes.

First answer by Jmowreader. Last edit by Jeanne.Shu. Contributor trust: 0 [recommend contributor ]. Question popularity: 33 [recommend question].

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