Gainer's HC-110P, HC-110PP : LUSENET : B&W Photo - Film & Processing : One Thread

Have anyone tried Gainer's ascorbic acid developer that substituted phenidone with HC-110? I haven't but I'm curious if I can use my unused HC-110 and also if HC-110 can be a stable alternative to keeping phenidone in dry or stock solution...


0.5 fl. oz. HC-110 stock (0.125 fl. oz. concentrate)

2g Vitamin C powder

5g sodium carbonate

Water to make 1 qt.

Sodium carbonate (anhy) can be produced in kitchen by decomposing sodium bicarbonate (baking soda). Use a cheap enameled pan or anything that does not use alminum and heat it up. Sodium carbonate is used in dishwasher detergent and so don't use anything that says incompatible with dishwasher. I don't recommend grinding up Vitamin C tablets as they contain stuff other than ascorbic acid, and hard to dissolve.

-- Ryuji Suzuki (, July 01, 2001


Sodium carbonate is also the "PH Plus" sold cheaply for swimming pool use. Anyway, I tried his paper developer and was not impressed. It was very low in activity and took 3 to 5 minutes to get a decent image. I think I tried it with Oriental and Ilford VC RC papers. It was very hard to get a good Dmax. The film version might have possibilities, but I'm not sure what advantage it would offer over XTOL, HC-110, or good 'ol D-76.

-- Conrad Hoffman (, July 01, 2001.

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