Chemistry - What is this Lab equipment?

Solution 1:

This lab equipment is called 'Fermentation Tube'.

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If you want to see how an experiment is carried out with this equipment, please watch the video below.

Mark Garcia: Lab Protocol - Fermentation in Yeast (Unit 9 Respiration); YouTube

Solution 2:

The piece is a type of eudiometer also called a gas measuring tube. The graduations are for measuring gas collected and the bulb is used to hold liquid to assist in filling the tube with liquid.