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Recipe & dev times for Shanghai GP3 100 at 160 in Caffenol-C-M (RS) 1:1
Notes
Reinhold's recipe (caffenol.blogspot.com), slightly modified. Less soda, making it less active, but gives slightly finer grain.
40g/l Instant coffee
40g/l Sodium carbonate
16g/l Ascorbic acid12 inversions initially, 3 every minute thereafter. Stop, fix, wash as normal.
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