The Dictionary Of Photography

A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.

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Hydrometer and Hydrometry
Acetic Acid.
Quantities of Crystallisable Acid in Mixtures of Acetic Acid and Water of various Densities at 150 C.
N.B. - The density of the mixture increases until nearly 25% of water is present, after which it again decreases. Acetic Acid is therefore better tested volumetrically with a standard solution of alkali.
Table of Specific Gravities and Strengths of Chromic
Acid.
385                               cc