After development is complete the bichromate salt is discharged, and the image rendered perfectly insoluble by well washing in cold water and placing in a dish containing a 5 per cent.
"Photogravure"
Henry R. Blaney
Six ounces bichromate Potassium.
"Photogravure"
Henry R. Blaney
Books lay promiscuously about, while here and there long lines of bichromate-of-potash cells could be seen, together with experimental models of ideas that Edison or his assistants were engaged upon.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin