Wetting agent Foma Fotonal 250 ml – Foma Fotonal liquid wetting agent 250ml

Foma Fotonal wetting agent in a 250 ml bottle is a liquid formulated to reduce surface tension during photographic film and paper processing. It assists in even water removal after rinsing, promotes uniform drying, and helps prevent water spots, streaks and uneven residues on negatives and prints. The compact 250 ml size suits individual photographers and small labs that require controlled application of a wetting agent in darkroom workflows.

Advantages

Foma Fotonal increases the efficiency of final rinses by allowing water to sheet off emulsion surfaces, reducing the likelihood of mineral deposits and drying marks. The formulation is concentrated for economical use, easy to measure for repeatable results and compatible with conventional black-and-white darkroom processing. Its liquid form disperses quickly in water baths to provide consistent wetting action across processed film and paper.

Suitable for

• Black-and-white film drying after development
• Paper prints final rinse and drying
• Small photo labs and educational darkrooms
• Photographers seeking reduced water spots and faster drying times

Key specifications

• Volume: 250 ml liquid wetting agent
• Form: water-dispersible liquid
• Intended use: reduces surface tension on photographic emulsions and paper
• Application: add to final wash water or use in a recirculating rinse
• Compatibility: suitable for black-and-white darkroom processes

How to use

Add a small measured amount of Foma Fotonal to the final rinse bath following manufacturer guidance for dilution. Gently agitate the bath to ensure even dispersion of the wetting agent, then remove film or paper and allow to drain and dry on a dust-free surface or drying cabinet. Use minimal handling of emulsion surfaces to avoid marks; ensure dilution and contact time are consistent from one batch to the next for reliable drying performance.

Usage recommendations

Use sparingly: overdosing will not improve results and may leave residues. Rinse mixing ratios and handling procedures should follow standard darkroom practice. Store the bottle tightly closed, in a cool, dry place away from direct sunlight and freezing temperatures. Keep out of reach of children and follow local disposal regulations for photographic chemicals.