Preparing purified macromolecular soluble prussian blue

摘要

Intensely colored inorganic macromolecular complex compounds or the solution thereof for use in determining the void volume (Vo) of the gel column are provided by a process wherein the crude solution of the so-called Soluble Prussian Blue is purified macromoleculologically, that is, purified to provide the macromolecular substance possessing the desired range of magnitude of molecular size, by means of a salting out procedure.