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Old 28th September 2021, 06:24 PM
John King John King is offline
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Join Date: Nov 2012
Location: County Durham
Posts: 3,319
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Bleach is also very good for cleaning the developing slot so long as you are not in a hurry. The last time I used it I filled a 50/50 solution and left it for a week when I was away in Europe in June 1919 (Seems like a lifetime a ago now!)
But when I came back the slot was a lot cleaner than I left it. IOt needs doing again.

Bleach does loose it chemical activity after a short while so perhaps once every 3 months is a good interval.
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