Photographers' Formulary 100g Potassium Alum Photographic Hardener

Photographers' Formulary 100g Potassium Alum Photographic Hardener
Photographers' Formulary
sku: PYAL100G
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€ 5.58
Shipping from: United States
   Description

The Photographers' Formulary Potassium Alum is used in Hardening solutions for fixing baths, Ingredient of the hypo-alum toning bath and Clearing bath. Note: Cake alum, found in grocery stores can be substituted for potassium alum.

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