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

Re: gum preservatves

Lemon juice does the trick and was Demachy's method in 1897.

----- Original Message Follows -----
From: davidhatton@totalise.co.uk
To: alt-photo-process-l@usask.ca
Subject: Re: gum preservatves
Date: Thu, 04 Sep 2008 16:18:47 +0100

><br />
>Hi Loris,
>Is there any reason one can't add some acid to the mix,
>Oxalic or citric say, to give an increase in printing
>speed? You could have a non-smelling acidic mix then.. </p>
>David H

Assistant Professor of Photography
Photography Option Coordinator
Montana State University
College of Arts and Architecture
Department of Media and Theatre Arts, Room 220
P.O. Box 173350
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