Photographers Formulary and Bosick & Sullivan both make pyro kits designed for r otary processors. I was talking to someone who said that the B&S rollo pyro is best because it contains citric acid which will prevent excessive build up of st ain base fog (uniform stain density forming regardless of silver development). Their comment may have been made assuming I was going to use PMK in the JOBO and they may not have known about the PF ABC pyro formula. Does the citric acid ac t as a preservative slowing down pyro oxidation, act to reduce excessive base fo g, or both?
I?d appreciate any insight from those having experience with these two offering s, how they compare, recommendations. I?m interested in using my JOBO to proce ss pyro.
THX
H
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