From: Sandy King (sanking@CLEMSON.EDU)
Date: 11/26/01-02:15:12 PM Z
Jeff,
Garimo's procedure with rotary processing is well-documented and has
been in use since the early days of PMK. It is not, however, the only
method of reducing the general fog caused by oxidation with long
development times in PMK. Another method simply calls for adding a
small amount of sodium sulfite to the working solution. Another
solution is to add a small amount of ascorbic acid.
Sandy King
>I saw no one comment on Garimo's procedure of changing to a fresh batch of
>pyro developer in the middle of the development period in order to defeat
>oxidation. I've wondered about this because, although I use trays and not
>rotary, my development time in PMK is pretty long -- 12 minutes. -jeff
>buckels
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