Eosin n. (Chem.) A yellow or brownish red dyestuff obtained by the action of bromine on fluoresceïn, and named from the fine rose-red which it imparts to silk. It is also used for making a fine red ink. Its solution is fluorescent.
... (in watery fluids) it is enough to place the air-dried preparation at about 110 deg. C. for one half to two minutes. For differential staining mixtures, for instance the eosin-aurantia-nigrosin mixture, a time of two hours is necessary, or higher temperatures must ... — Histology of the Blood - Normal and Pathological • Paul Ehrlich
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