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Response to Rodinal with Ascorbate - what am I doing wrong???

from Mike Bell (mikebell@sc.rr.com)
Wow, Ryuji must have payed a whole lot more attention in freshman chemistry than I did.

I hope that this is not straying too far, I'm staying with the ascorbic acid line. I don't have any metol around, so I am going to use just enough D-76 powder to get the equivalent amount of Metol. This will also give me about 10 grams/liter of sulphite (notice the spelling, I took freshman chemistry a long while before Ryuji). This amount of Sulphite should be about equivalent to what Rodinal has. I planned to mix the ascorbic acid and the D-76 together for part A. Do you see any problem with this?

This will also give me about 0.5 g/liter of hydroquinone in the part A stock solution. I am assuming that this will give the metol a little boost, but not much. I was going to start with D-76 straight times. Does this sound about right for a starting point for testing? I'm using FP4 (Arista 125) 4x5.

Thanks to all for comments. This is the first time in 30 years that I've processed film and I really looking forward to getting back in.

Mike

(posted 8079 days ago)

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