Re: LC-1 developer question
- To: alt-photo-process-l@usask.ca
- Subject: Re: LC-1 developer question
- From: Richard Knoppow <dickburk@ix.netcom.com>
- Date: Thu, 27 Mar 2008 07:53:12 -0700
- Comments: "alt-photo-process mailing list"
- Delivered-to: alt-photo-process-l-archive@www.usask.ca
- Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327;d=ix.netcom.com;b=JC4hbuKM3kI5din5MzHwnsl4KFrgAuhEz35Z4qFHJtJU2oaOJZHPjx8QkuveS5IY;h=Received:Message-ID:Reply-To:From:To:References:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP;
- List-id: alt-photo-process mailing list <alt-photo-process-l@sask.usask.ca>
- References: <BAYC1-PASMTP01C8EB4E937340EBDDBE06DAFE0@CEZ.ICE>
- Reply-to: Richard Knoppow <dickburk@ix.netcom.com>
- Resent-date: Thu, 27 Mar 2008 11:07:03 -0600 (CST)
- Resent-from: alt-photo-process-error@sask.usask.ca
- Resent-message-id: <20080327170703.893077BE3C@www.usask.ca>
- Resent-reply-to: alt-photo-process-l@usask.ca
----- Original Message -----
From: "david drake" <daviddrakephoto@sympatico.ca>
To: <alt-photo-process-l@usask.ca>
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
to find
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
assuming that
it was the sodium sulphite which caused the crystals?
Doubling the
sodium sulphite meant adding 120 grams to 1 litre of
solution A. I'm
wondering if I need to add that much sodium sulphite,
perhaps you
only need a certain percentage, assuming that it's not
actually an
active part of the developer? I have strained the
developer but
haven't used it yet.
So my question are:
-were the crystals from an over concentration of sodium
sulphite?
-do I need to use double the amount of sodium sulphite in
a double
strength developer?
thanks,
david
david drake photography
www.daviddrakephotography.com
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.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@ix.netcom.com