(under the class definition) Compositions specialized and designed for, or peculiar to, use in physically separating from each other, by froth-flotation or difference in specific gravity or rate of subsidence, two or more components of a
mixture which differ from each other at least physically, or processes of making them.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181.1+, for getter and gas or vapor generating compositions for electric lamps, electric space discharge devices and other evacuated or gas or vapor filled containers.
SEE OR SEARCH CLASS
209, Classifying, Separating, and Assorting Solids, for processes or apparatus for using such compositions.
