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Review Summary
Concentrated alum
Paper-maker's alum
Sulfate of alumina
Colorless crystals
Can be used as a substitute for alum as a hardener (ratio = 2 parts aluminum sulfate as a substitute for 3 parts alum).
Al2(SO4)3 . 18H2O
1lbs (0.45kg)
Make your photographic prints last longer with the Photographers' Formulary 1lb Aluminum Sulfate Photographic Hardener, an effective and professional-grade choice for photographers seeking to enhance the durability of their work. This high-quality, finely powdered hardener is a reliable substitute for traditional alum, offering a simple conversion ratio of 2 parts aluminum sulfate to 3 parts alum, ensuring a seamless integration into your photographic processing routine.
Crafted with the needs of serious photographers in mind, this versatile hardener is designed to reinforce photographic paper, providing it with the strength and resilience needed to withstand handling and display. The aluminum sulfate formulation is tailored specifically for photographic use, guaranteeing that you are using a product that is optimized for the best possible results in your prints.
The 1lb quantity of this durable hardener ensures that you have enough supply for numerous projects, making it a practical addition to any darkroom. Its stability under ordinary conditions of use and storage means you can rely on consistent performance over time. Whether you're a professional photographer or an enthusiast, the Photographers' Formulary Aluminum Sulfate Photographic Hardener is an indispensable tool for producing prints that stand the test of time.