Photographers' Formulary Casein Printing Kit

Photographers' Formulary Casein Printing Kit

Photographers' Formulary Casein Printing Kit

B&H # PHCSPK MFR # 07-0106
Photographers' Formulary Casein Printing Kit

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  • 1Description

The Casein Printing Kit from Photographers' Formulary contains pre-measured amounts of the chemicals needed, as well as red, yellow, and blue watercolors, to produce approximately twenty 8 x 10" tri-color gum prints.

Casein is a colloid derived from milk, and when used for printing, the process follows a traditional gum printing method: the colloid is mixed with a light-sensitive dichromate and watercolor, brushed onto paper, and exposed underneath a negative using UV light. After exposure, the light will harden the casein in the thinner regions of the negative and the areas receiving less exposure will wash away in a water bath. For each print this exposure and development process is done multiple times, particularly when making tri-color prints that require separate red, yellow, and blue exposures.

Chemicals
This kit contains pre-measured amounts of the following chemicals for producing approximately twenty 8 x 10" prints.
  • Potassium dichromate
  • Ammonium caseinate
  • Sodium benzoate
  • Red, yellow, and blue watercolors
In the Box
Photographers' Formulary Casein Printing Kit
  • Potassium Dichromate
  • Ammonium Caseinate
  • Sodium Benzoate
  • Red Watercolor
  • Yellow Watercolor
  • Blue Watercolor
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    • 1Description
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