Archived posting to the Leica Users Group, 2001/07/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks for the hints, Mark.I also noted the other day in answer to someone else's question you compared the development times of D23 and D76. I should probably have paid better attention in chemistry, but what I get from your detailed note, and some of the stuff in Malcolm's earlier posting, is that a good deal weaker solution of Elon and sodium sulfite would work better as solution A and keep the Kodalk ratio as is. So: Metol, 5 grams Sodium sulfite 20 grams for a liter and leave in solution A for up to or about 8 minutes, solution B (where I normally do mild agitation once a minute in a combi-tank) for what, 3 to 6 minutes? Guess I would use the same times as a starting point for roll films... I used to do the old D23 water bath, too. Alone in the dark. Bill Harting