U of S | Mailing List Archive | alt-photo-process-l | Re: Agyrotype

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"
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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.


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

  • References:
    • RE: Agyrotype
      • From: joachim oppenheimer <joachim2@optonline.net>