### What is a Density Bottle? A density bottle, also known as a specific gravity bottle or a pycnometer, is a laboratory device used to determine the density of a liquid or solid material. It typically has a precise volume and a narrow neck, allowing for accurate measurement of the liquid's mass when filled.

A density bottle is a scientific instrument used to determine the density of a liquid. It is a sealed flask with a stopper that has a capillary tube through it, which allows for the expansion and contraction of the liquid inside. The bottle is usually made of glass and has a specific, known volume.

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