Photographers' Formulary 10g Potassium Alum Photographic Hardener

Key Features

• Achieve archival quality prints with our Potassium Alum photographic hardener.
• Potassium Alum ensures fine grain in your black and white film development process.
• Get consistent results every time with this easy-to-use darkroom chemical.
• Extend the life of your prints; use Potassium Alum for hardening solutions.
• This photographic hardener is perfect for creating high contrast images.
• Use in fixing baths and clearing baths for optimal black and white results.