[pure-silver] Re: Amidol and oxidization
- From: Eric Nelson <emanmb@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 23 May 2009 10:17:10 -0700 (PDT)
As I recall, 2 hours max. It basically just stops working. So when you make
your first batch, weigh out enough to make a 2nd batch and keep it unmixed and
ready to go.
________________________________
From: Bogdan Karasek <bkarasek@xxxxxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Saturday, May 23, 2009 12:01:08 PM
Subject: [pure-silver] Amidol and oxidization
Hi all,
Again,, a Thank You to all who responded to my query concerning AZO and
fogging. Very helpful responses but which lead me to other questions
concerning AMIDOL which was mentioned as THE developer for AZO. I've order a
quantity of Amidol from my supplier and will be using the formula found on
Michael A. Smith's web site.
I've done some further research into the p[properties of Amidol which I have
never used before. Looking through the "Darkroom CookBook", Anchell mentions,
as have others on this group, that Amidol oxidizes easily and should be mixed
just before usage.
The question I have concerning AMIDOL regards the following from
the"CookBook": "Oxidizes rapidly and keeps poorly"
Can anybody quantify "rapidly"
My usual darkroom work practice when using Dektol is to mix a 4 liter batch of
1:2 Dektol and that sits in a large tray for at least 8-10 hours as I print,
after which I dump it when I am finished at the end of the day
What about Amidol???? How long will that keep in an open tray before it
oxidizes and I have to dump it.... 2 hours, 4 hours, 6 hours or what? Am I
better off mixing a small batch, 1.5L and changing often, or will a 3L
batch last longer????
From personal experience working with Amidol, can anybody quantify "oxidizes
rapidly"
Cheers,
Bogdan
-- ________________________________________________________________
Bogdan Karasek
Montréal, Québec bogdan(at)bogdanphoto.com
Canada www.bogdanphoto.com
"I bear witness"
________________________________________________________________
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