From: roger kockaerts (permadocument@yahoo.com)
Date: 06/16/01-12:29:47 AM Z
Dear list,
I would like to pick in on glass plate cleaning.
Standard procedure in photographic conservation is:
- make a suitable hard cushion (covered with lens
cleaning tissue)to be used as work surface;
- put your glass plate, emulsion side down onto this
surface;
- clean with swabs of cotton moistened with a solution
of distilled water and isopropyl alcohol (70% water);
- discard the soiled cotton ball into a coverd bowl of
water;
- keep cleaning in this way till absolutely clean;
- polish the glass with a dry cotton ball;
- put the glass plate emulsion side up and inspect its
surface; in most cases no further intervention is
necessary;
- if soiled, the emulsion should be dusted of with a
(very) soft brush (squirrel tail type);
- in the most extreme cases a humid intervention can
be mad with 1,1,1, trichlorethane; after such
intervention the emulsion will be in a very dry state
and should absorb water from the atmosphere to
equilibrate its natural water content (several days).
I hope this information is helpful,
with my best regards,
Roger Kockaerts
professor photographic conservation-restoration
<http://home.tvd.be/cr25588/ph7/>
> >..-----Original Message-----
> >..From: David Barker [mailto:dbarker_ca@yahoo.com]
> >..Sent: Friday, June 15, 2001 7:22 AM
> >..To: altphoto list
> >..Subject: cleaning glass negs
> >..
> >..
> >..Hi all,
> >..
> >..I'm new to this list so I thought I should
> introduce
> >..myself. I have been interested in historical
> methods
> >..for some time and have finally got around to my
> first
> >..experiments with salted paper. The pictures
> aren't
> >..perfect yet but I've been making progress.
> >..
> >..The question I have is about some glass negs I
> bought
> >..a while ago. I probably know the answer to this
> >..already but what I am wondering is if there is a
> way
> >..to clean the emulsion side of the neg. There was
> a
> >..lot of dirt that came off the glass side, and it
> would
> >..be nice to print without the extra "haze".
> >..
> >..Any suggestions are welcome. Glad to be part of
> the
> >..group here.
> >..
> >..David Barker
> >..
>
>..__________________________________________________
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> >
> >
> ----
> Richard Knoppow
> Los Angeles,Ca.
> dickburk@ix.netcom.com
=====
Roger Kockaerts
Permadocument - pH7
Avenue de la Jonction 55
B-1190 Brussels
We invite you to visit our homepage at: <http://home.tvd.be/cr25588/pH7>
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