Photographers' Formulary 100g Potassium Alum Photographic Hardener

Key Features

• Achieve superior image quality using Potassium Alum in your black and white development.
• Potassium Alum ensures archival properties, extending the life of your precious prints.
• Consistent chemical mixing ratios are easy with our high-quality 100g Potassium Alum.
• Use as a hardening solution in fixing baths for enhanced film durability and longevity.
• Photographers' Formulary Potassium Alum improves film's resistance to scratches and damage.
• Extend shelf life and maintain peak performance of your darkroom chemicals with Alum.