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Review Summary
Concentrated alum
Paper-maker's alum
Sulfate of alumina
Pale green to white in color and is available in powdered and granular forms
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 . 14H2O
1lbs (0.45kg)
It is essential for photographers who process their own prints to have reliable chemicals that ensure the highest quality results. The Photographers' Formulary Ammonium Aluminum Sulfate is a premium-grade photographic hardener designed to enhance the durability and longevity of your photographic prints. This versatile compound serves as an excellent alternative to traditional alum hardeners, offering consistent performance in various photographic applications.
Crafted with precision, this 1lb package of Ammonium Aluminum Sulfate is specifically formulated for use in photographic processes where a hardening agent is required. It is commonly integrated into the fixing stage of print development to increase the rigidity of the gelatin in both film and paper emulsions. This not only helps in preventing scratches and abrasions but also aids in protecting the integrity of the image during washing and handling.
The use of this hardener is particularly beneficial in archival printing, where the preservation of photographs is paramount. By reinforcing the emulsion layer, it contributes to the archival quality of prints, ensuring that they withstand the test of time with minimal degradation.
For those who are environmentally conscious, the Photographers' Formulary Ammonium Aluminum Sulfate is a wise choice. It is known for its low toxicity, making it a safer alternative for both the user and the environment, compared to other hardening agents.
In summary, the Photographers' Formulary Ammonium Aluminum Sulfate is an indispensable tool for both amateur and professional photographers alike. Its ability to harden and preserve photographic prints without compromising image quality makes it a staple in the darkroom. Whether you're working on fine art photography or simply cherishing memories, this photographic hardener ensures that your prints remain pristine for generations to come.