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Photographers' Formulary 100g Aluminum Sulfate Photographic Hardener
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Photographers' Formulary 100g Aluminum Sulfate Photographic Hardener

SKU: PYALSU100G MFR: 10-0035 100G
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$4.95
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Key Features

  • Achieve superior image quality with this 100g bottle of Aluminum Sulfate hardener.
  • Extend your prints' archival properties; use as a fixer for long-lasting photos.
  • Enjoy ease of use; this photographic hardener mixes easily for consistent results.
  • Substitute for alum; use 2 parts Aluminum Sulfate for every 3 parts of alum needed.
  • Enhance shelf life of your darkroom chemicals with this quality hardener.
  • A cost-effective solution for hardening film, this Aluminum Sulfate is budget-friendly.
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Special Order?Estimated to Ship: 04/16/2026
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Review Summary

Photographers' Formulary Aluminum Sulfate Specifications

  • Synonyms

    Concentrated alum
    Paper-maker's alum
    Sulfate of alumina

  • Appearance

    Colorless crystals

  • Uses

    Can be used as a substitute for alum as a hardener (ratio = 2 parts aluminum sulfate as a substitute for 3 parts alum).

  • Chemical Formula

    Al2(SO4)3 . 18H2O

  • Weight

    100g (3.53oz)

About Photographers' Formulary Aluminum Sulfate

The Photographers' Formulary 100g Aluminum Sulfate Can be used as a substitute for alum as a hardener (ratio = 2 parts aluminum sulfate as a substitute for 3 parts alum).

Note:

Stable under ordinary conditions of use and storage.

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Key Features

  • Achieve superior image quality with this 100g bottle of Aluminum Sulfate hardener.
  • Extend your prints' archival properties; use as a fixer for long-lasting photos.
  • Enjoy ease of use; this photographic hardener mixes easily for consistent results.
  • Substitute for alum; use 2 parts Aluminum Sulfate for every 3 parts of alum needed.
  • Enhance shelf life of your darkroom chemicals with this quality hardener.
  • A cost-effective solution for hardening film, this Aluminum Sulfate is budget-friendly.