[pure-silver] Re: Adding Pot Bromife to PC-TEA
- From: Ryuji Suzuki <rs@xxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 03 Jan 2005 16:10:08 -0500 (EST)
From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
Subject: [pure-silver] Re: Adding Pot Bromife to PC-TEA
Date: Mon, 3 Jan 2005 15:59:04 -0500
> BTW, data on ammonium bromide seems to indicate that it would be
> easier to dissolve than the potassium salt. I have not tried this
> out as yet.
Ideally, I would start with a carefully formulated developer to avoid
all these issues. What is the aim of dealing with a developer with
troubles like this?
I'd not even consider ammonium salt in a fine grain developer.
Tertiary amines like triethanolamine is a way to control the solvent
effect of ammonium ion. If KBr doesn't work, I would look into
6-nitrobenzimidazole or 1-phenyl-5-mercaptotetrazole. The latter is
used in quantity like 2-20mg per liter of working solution anyway.
--
Ryuji Suzuki
"Keep a good head and always carry a light camera."
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