CD-1 is superadditive with Ascorbic Acid. As result we have less color and more bw. I was try this combo and reject it.
from theory: oxidized form of color dev. agent forms a dye. any antioxidants such as sulfite, HAS, AA recovery CD and decrease dye forming. ideal color developer must be without any sulfite/HAS )) but this is impossible because short live. so level of any antioxidant must be low as possible.Relayer, what I have seen with ascorbic acid is that added at concentrations of 350-500mg/l, it serves primarily to prevent oxidation and doesn't affect silver reduction.
some my experiment with CD-1 super fine-grain dev here:I have seen fine-grain developer formulas with CD-1
Might make an excellent fine grain B&W developer though, it's worth a try. This is an area that's been neglected although Johnsons (Meritol), Agfa Atomal and May & Baker Promicrol usesimilar approaches.
Ian
if you interesting - I have big collection of CD/PPD fine-grain developersA starting point might be
this is true if you try to use PPD as single dev.agent. or in combination with other not super-additive dev.agent.Very nice and fine grained. PPD developers have been used for over 100 years but are often slow in development.
one shot color dev can be made with low amount of sulfite and without additional antioxidant like HAX, AA, HQ etc. in attach result of Superia Reala in my color dev concentrate 1+1+30 based on CD-1 and without HASA note about one shot developers with no antioxidant!
Sure looks like it ...Indeed Weissberger's books on heterocyclic compounds would be an excellent starting and reference point; unfortunately, I only have his Organic Solvents handbook. Was he primarily employed at EK?
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