Rollei Black Magic Hardener RBM5 Additive - 250 ml

Rollei Black Magic RBM5 Hardener is a specialized post-treatment solution for substrates coated with Rollei Black Magic photo emulsion. It increases the mechanical stability of the dried gelatin emulsion and offers protection against abrasion, scratches, and cracking – especially useful for challenging materials such as glass, wood, or textiles that may be exposed to higher mechanical stress.

The hardener is ideally used after development and washing, but before the material is fully dried. This allows it to be evenly absorbed into the emulsion and ensures optimal effect.