The single-step solution is now also available in powder concentrate. Just like the liquid version, it allows you to process all your B&W film at home with just one chemical.
Df96 monobath easily processes any standard black and white film at its native ISO. It is designed with traditional cubic-grain emulsions in mind, like BwXX, TriX and HP5, with high silver content. It also works well with tabular grain films with color dye technology, like Tmax, but may come out of the bath with pink/purple dyes in the emulsion, and require double the processing time to clear. High speed films like P3200 and Delta3200 can be processed at their native ISOs between 1000-1600 by the instructions on the label, or pushed to 3200 by adding 10F (6C). All films can be pushed or pulled by adjusting temp. +/-10?F (6C).
The bath comes in powder form and is easy to mix with water. The main advantage of powdered chemistry is that it can be stored almost indefinitely and that the resulting working solution can be made according to your own wishes and use.
Complete instructions can be found here!
Processing methods for Df96
Development is increased more than fixing by temperature. Fixing and completion is accelerated by agitation, while decreasing development. Processing over 82F (28C) will result in pushed negatives with higher contrast and more pronounced grain. Below 68F (20C) renders pulled contrast negatives.
Native ISO development:
80F (27C) for at least 3 min Constant agitation
75F (24C) for at least 4 min. Intermittent agitation
70F (21C) for at least 6 min. Minimal agitation
Push +1 development:
80F (27C) for at least 6 min. Minimal agitation
85F (30C) for at least 4 min Intermittent agitation
90F (32C) for at least 3 min Constant agitation
Pull -1 development:
70F (21C) for at least 4 min Constant agitation
65F (18C) for at least 6 min Intermittent agitation
3200 speed BW films:
Above 90F (32C) for at least 4 min Intermittent agitation
Agitation helps create evenly developed exposures, and prevents over-processed, under-fixed negatives.
Fluid inversions and/or rotations, while changing direction.
30 sec constant agitation, then 10 sec every min.
10 sec gentile agitation, then 5 sec every min.
*Bromide drag lines can occur if left to stand for any more than 1 min.
Can process 16+ rolls of film. Simply recombine used chemistry and add +15sec. for each roll previously processed until you reach 8 min. If a film does not appear fully cleared, process for longer in Df96. It will not affect development.
Expected shelf life is 1 year from purchase, and once opened should be used within 2 months. Film will still finish processing as chemicals age but will eventually produce thin negatives when developer is exhausted.
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