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Pycnometer and blue liquid

Pycnometer and blue liquid

C036/3549

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Credit

H. S. PHOTOS / SCIENCE PHOTO LIBRARY H. S. PHOTOS / SCIENCE PHOTO LIBRARY

Caption

A pycnometer or specific gravity bottle is used to determine the density of a liquid. The close-fitting ground glass stopper has a capillary tube through it so that air bubbles may escape from the apparatus. Thus a liquid's weight can be measured accurately using an analytical balance. The flask is weighed empty, full of water, and full of a liquid whose relative density is desired (the unknown blue liquid in this case). Then the relative density of the liquid can be calculated.

Release details

Model release not required. Property release not required.

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