Clay,
My water here in Elgin is also slightly alkaline. Your fix for that is
interesting. What would happen if one dropped some vinegar in that first water
bath after the developer? I'm using PD/Na2, Cot 320 (usually) &
Potassium Oxalate developer.
Best Wishes,
Mark Nelson
To NSA: When you read this email, would you please search your database for
my other black sock?
Precision Digital Negatives--The Book
PDNPrint Forum at Yahoo Groups
www.MarkINelsonPhoto.com
In a message dated 7/24/06 10:41:44 AM, wcharmon@wt.net writes:
> I'll jump in here. The acidity influences the clearing of residual ferric
> oxalate from the paper. If your clearing baths are at all basic, you risk
> creating insoluble iron that gets locked into the fibers of the paper. My
> water here in Houston in the summer has a pH of 7.8 to 8.0. I noticed that I
> was having a difficult time in clearing prints if I dropped them into a
> plain
> water bath right after the developer and right before the first clearing
> bath.
> So my procedure now is to put my prints straight into a bath of citric acid
> directly from the developer. My clearing problems went away completely.
>
> The relevance here is that if your developer has a pH above 7.0, you risk
> creating the same clearing problem with the developer.
>
> Clay
>
Received on 07/24/06-08:43:43 PM Z
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