[pure-silver] Re: Pyro in a Jobo Processor
- From: Tony Wingo <akw@xxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 21 Mar 2005 11:21:42 -0800
> I am ignorant of the chemical nature of collodian but it
>was disolved in diethyl ether and it made a pretty good, tough and flexible
>support.
I believe collodion is nitrocellulose dissolved in a mixture of
alcohol and ether.
>Wonder if it was ever used in the early days of photography?
Yes, it was the basis of the "wet plate" technology that was used
from the mid 1850's through the 1880's, at which point it was largely
supplanted by the gelatin based "dry" plates.
--
-tony
San Leandro, CA
http://www.shapesandshadows.com
=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your
account (the same e-mail address and password you set-up when you subscribed,)
and unsubscribe from there.
Other related posts:
