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Response to Effect of Rodinal dilutions?

from Volker Schier (Volker.Schier@fen-net.de)
I think I did ot point this out enough for "first time" users: The standard dilution of R09 is 1:40, other than 1:25 of Rodinal. R09 is more concentrated, which makes it even cheaper than AGFA Rodinal. If you previously used Rodianl in 1:75 and 1:100 you will have to diulute R09 1:100 to 1:200. The results are very rewarding! The bottle will have instructions for 1:40. You will have to experiment to get the data for 1:100 and 1:200, but the developing times will be shorter than the data sheet will suggest (remember they give a multiplication factor for higher dilutions). Since I only have the data for the films I use regularly it might be a good idea to report developing times and effective speed to the newsgroup or to send it to the developing time page of Mirko Böddeker. He collects data like this and puts in on the net.
(posted 8329 days ago)

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