Narrow Glass Vessel Used to Heat Chemicals in Labs

This page is the CodyCross answer for the clue below from Small World, Group 690, Puzzle 4 (Beach Pebbles).

Question is: Narrow Glass Vessel Used to Heat Chemicals in Labs

and the answer is: TESTTUBE

Word Meaning:

TEST TUBE — (chemistry) A glass tube, rounded at one end and open at the other, used for small-scale laboratory tests.

Definitions from Wiktionary.

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