Tannic Acid Plate Etch TAPEM

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Pressroom Products
Tannic Acid Plate Etch

A Gum Arabic Solution that can be used in the pressroom and plateroom.
Sold by the Gallon
Tannic Acid Plate Etch PH range 2.2 - 2.6 for tapem mixture

To make TAPEM: Mix: 42 oz. tannic Acid, 76 oz. gum arabic, 1 oz. phosphoric acid.

Plate Etch: Use full strength in the same machine as you use any etch for etching plates.
Gumming Plates: Excellent for this purpose. Follow standard procedure.
Fountain Etch: Use one to four ounces per gallon of working solution. Do not add gum.