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Development time in tanks (68°F/20°C) for Ilford FP4 Plus (EI 200) film: Diluted 1+9 = 5 min. Diluted 1+14 = 7.5 min.
For Ilford PAN F Plus (EI 50) film: Diluted 1+9 = 4 min. Diluted 1+14 = 6 min.
Storage time for unopened full bottle of Ilfosol-S concentrate is 18 months . For half full bottles of concentrate storage time is 3 months. Once it is diluted it can only be used as a "one-shot" developer and should not be stored.
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