[pure-silver] Re: Multigrade 1:9 developer vs Dektol 1:2
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Wed, 22 Feb 2012 16:52:56 -0800
----- Original Message -----
From: "Eric Nelson" <emanmb@xxxxxxxxx>
To: "pure silver" <pure-silver@xxxxxxxxxxxxx>
Sent: Wednesday, February 22, 2012 3:00 PM
Subject: [pure-silver] Multigrade 1:9 developer vs Dektol
1:2
Stopped into Calumet yesterday to get some fixer, developer
and paper and there was no Kodak chemistry at all. 0
So looking at alternatives I ended up w/Ilford's Multigrade
developer which is according to the label diluted 1:9. I'm
wondering what folks' experiences are w/this developer
diluted further as I'm hoping to stretch it's use till I
move. 1:9 is fairly energetic and results are fine
w/Multigrade paper as one might expect.
Eric
This might be false economy. The capacity of the
developer and its resistance to aerial oxidation become less
as it is diluted. You may also have problems obtaining good
blacks. Since paper is developed to "completion", that is,
to its maximum density and contrast, the strength of the
developer mainly affects the developing time but it can also
affect the maximum density somewhat. Probably Multigrade at
1:9 is of similar activity to Dektol at 1:2 but even Dektol
can benefit from being diluted _less_ as Richard Henry
indicates in his book when he mentions that he had by error
been diluting it 1:1 and when he discovered that and
switched to 1:2 found he got better results from the
stronger solution.
I am not sure but think Multigrade is similar to a
liquid version of Bromophen, which in turn is a Phenidone
version of Dektol, yielding somewhat more neutral color (not
olive green) on many papers.
--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@xxxxxxxxxxxxx
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