Re: Agyrotype
- To: alt-photo-process-l@usask.ca
- Subject: Re: Agyrotype
- From: Richard Knoppow <dickburk@ix.netcom.com>
- Date: Tue, 27 May 2008 13:23:08 -0700
- Comments: "alt-photo-process mailing list"
- Delivered-to: alt-photo-process-l-archive@www.usask.ca
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- Reply-to: Richard Knoppow <dickburk@ix.netcom.com>
- Resent-date: Tue, 27 May 2008 14:23:19 -0600 (CST)
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----- Original Message -----
From: "joachim oppenheimer" <joachim2@optonline.net>
To: <alt-photo-process-l@usask.ca>
Sent: Tuesday, May 27, 2008 11:24 AM
Subject: RE: Agyrotype
I do not do that process, but would'nt distlled water do
the job? Joachim
-----Original Message-----
From: Don Bryant [mailto:dsbryant@bellsouth.net]
Sent: Tuesday, May 27, 2008 1:52 PM
To: alt-photo-process-l@usask.ca
Subject: Agyrotype
Hi Folks,
Anyone out there doing Argyrotypes?
If so how do you deal with the requirement of
non-chlorinated water for
processing? This requirement is really putting a damper on
my working with
the process.
Thanks,
Don Bryant
Chlorine, and some other disolved gasses, can be removed
from water by boiling it for a short time. This will also
remove some hardness and coagulate organic matter which will
then precipitate while the water stands and cools. However,
boiling will not remove chloramines which are used in place
of chlorine in some areas. For instance the city of Los
Angeles Department of Water and Power uses chloramine. An
activated charcoal filter, like a Brita filter, will remove
chloramines. So water that has been run through a Brita type
filter and boiled for a few minutes should be reasonably
free of photographically active materials.
Chlorine seems to be of relatively little importance for
conventional B&W photography but may be important in other
processes. It may react with silver nitrate to form silver
chloride.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@ix.netcom.com