High-quality Record Alum Hardening Converter and Fixer Additive for black and white films and papers Professional-grade product designed to toughen emulsions, increasing resistance to abrasion and water absorption Enhances archival permanence when used correctly, providing robust protection to emulsions Essential for resin-coated prints, preventing scratching and promoting a hard gloss on glossy finish papers Suitable for specific circumstances with fiber-based prints, such as when prints are to be dried on hot drums or if the emulsion is very soft Recommended for use with ARCHIVE Fixer Remover for thorough washing and even toning