Re: LC-1 developer question
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- Subject: Re: LC-1 developer question
- From: Richard Knoppow <email@example.com>
- Date: Thu, 27 Mar 2008 07:53:12 -0700
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----- Original Message -----
From: "david drake" <email@example.com>
Sent: Thursday, March 27, 2008 4:43 AM
Subject: LC-1 developer question
Last week I made up some LC-1 developer and arrived today
that it had precipitated out a large number of long
crystals. I did
make the developer double strength, as I had hoped it
would cut my
long developing time for lith film (which it did). I am
it was the sodium sulphite which caused the crystals?
sodium sulphite meant adding 120 grams to 1 litre of
solution A. I'm
wondering if I need to add that much sodium sulphite,
only need a certain percentage, assuming that it's not
active part of the developer? I have strained the
haven't used it yet.
So my question are:
-were the crystals from an over concentration of sodium
-do I need to use double the amount of sodium sulphite in
david drake photography
120 grams per liter is getting close to the saturation
limit for sulfide (I think its about 150 grams/liter).
Temperature may have some effect. Try warming the developer
to see if the needles go back into solution.
Los Angeles, CA, USA