FF No.1 CONCENTRATE 1:3 MONOBATH DEVELOPER (250ml) - US Dealers' Case (12 bottles)

FF No.1 CONCENTRATE 1:3 MONOBATH DEVELOPER (250ml) - US Dealers' Case (12 bottles)

Regular price $224.52 Sale


a CONCENTRATED version of your favorite MONOBATH DEVELOPER

Only 250ml of concentrate in a tiny bottle. *** IDEAL for SHIPPING *** You simply add 750 ml of distilled water to make up the full 1 Liter working solution.

Works great with 35mm, 120 and any size SHEET FILM.




The most convenient black and white film developer of which we know.  We use it here at Famous Format.

FF No.1 CONCENTRATE 1:3 MONOBATH DEVELOPER is a universal all-in-one developer, stop, and fix solution for black and white photographic film negatives.  It can be used in the field, in the darkroom, in your bathroom, or in a dark-bag to conveniently develop your black & white negative film in a single pass.

This monobath works with any black and white film negatives, and it works especially well with the old-style cubic-grain emulsions like Panatomic-X and others common in the 1950s and 1960s.  We have tested FF No.1 MONOBATH DEVELOPER specifically with our own Atomic-X 4x5 sheet film, Ilford Pan F+, HP5 Plus, Delta, Kodak TMAX, TRI-X, Efke 25, Ferrania P30, CineStill bwXX and Shanghai 100.  It should do a great job with old exposed black and white film that has been sitting undeveloped for years. For that mysterious roll of film that came inside your new, old-timey camera, FF No.1 MONOBATH DEVELOPER is especially recommended.

Perhaps you remember R5 MONOBATH DEVELOPER, which needed to be warmed to 85°F? Well, FF No.1 MONOBATH DEVELOPER is an evolution of R5 except that FF No.1 works at room temperature (70-72°F), and in most places does not require warming.

Now, FF No.1 is offered here in concentrated form -- just add 750ml of distilled water to the provided 250ml of concentrate and you have your full 1 Liter working solution ready to go!


This bottle of FF No.1 CONCENTRATE 1:3 MONOBATH DEVELOPER contains 250ml of a concentrated monobath developer designed to be mixed 1:3 with distilled water. Specifically, add 750ml of distilled water to the contents of this bottle to make up the 1-Liter of working solution. Then follow the FF No.1 Directions for Use always available at famousformat.com and linked below.


Wear gloves and eye protection, and always use FF No.1 in a well-ventilated space. For best results with 35mm, 120 and 4x5 film, use a daylight tank.

1) Quickly pour the monobath at room temperature (70-72°F or 21-22°C) into your daylight tank. Ensure that the negatives are completely covered by the monobath fluid. Agitate using the inversion method continuously for the first minute, then invert once at each subsequent 30-second interval. Total development time is 6 minutes.

2) After 6 minutes in the solution, pour the monobath back into its container. Then rinse the negatives thoroughly in room-temperature water for 5 minutes.

3) Hang the negatives in a dust-free environment to dry. FF No.1 may be used again and again. The 1-Liter working solution develops about 400 square inches of film:

 35mm (36 exposures) at least 10 rolls
120 rollfilm at least 12 rolls
4x5 sheet film more than 20 sheets

The 250ml of concentrate comes in a small 8oz. bottle that ships inexpensively and keeps on the shelf for a long, long time. Use it again and again for the recommended number of rolls above or until you detect developer exhaustion. 

This US Dealers' Case contains 12 bottles and weighs 8.3125 lbs.


Directions for Use

Material Safety Data Sheet