[pure-silver] Re: Grain Size


----- Original Message ----- From: "titrisol" <titrisol@xxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, October 27, 2006 7:22 AM
Subject: [pure-silver] Re: Grain Size


Sulfite is very good with Rodinal but I followed Pat Gainer's
advice and added 4 g/l of sodium ascorbate instead.
That makes the development faster so that 1+50+C times are the
1+25 times.
Graininess decreases, tonality is smooth and sharpness is not
affected.

I wonder if you could also add ascorbate to D76

Xtol is essentially a D-76 type developer using Ascorbic acid and Phenidone in place of the Hydroquinone and Metol.
There is no magic in Ascorbic acid. By itself it is not a very satisfactory developer but it is superadditive with both Metol and Phenidone in a way similar to Hydroquinone. The main advantage of Ascorbic acid is that it is environmentally friendly. It can not be used as a substitute for Sulfite, the functions are different.

---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx 

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