[pure-silver] Re: Problem with 2 tray hypo (fixer).
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 4 Dec 2009 12:08:54 -0800
----- Original Message -----
From: "Bogdan Karasek" <bkarasek@xxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, December 04, 2009 4:35 AM
Subject: [pure-silver] Re: Problem with 2 tray hypo (fixer).
Richard Knoppow wrote:
However, he is covering both trays with the stuff and
only one, presumably the same one is having problems. I
also am assuming (a dangerous thing) that the Saran Wrap
is not re-used. If so it certainly could have picked up
some contaminent. It should really be discarded and
replaced fresh each time. I rather think think this is
what Bogdan is doing.
Hi,
No need to worry on that account, the Saran Wrap is a one
shot deal. Putting it down is another matter.... you need
four hands even with the least clinging stuff. anybody
have an easy solution for covering up their filled trays
overnight. I had thought of using a plexiglass covers
floating on the top of the chemicals but the sides of the
trays have a slight slope to them and varying levels of
chemicals in them, so it is very hard to get a tight fit.
I was thinking of something along the lines of the
flotation lids on the old tanks for developing sheet film,
but here, the sides were a straight vertical so you always
had a reasonably good fit.
Anyway, Thanks all for your input. Very helpful.
Ciao, Bogdan
I got curious and wrote to S.C.Johnson, the maker of
Saran Wrap, to ask if any oxygen permeability tests were
ever made. I suspect they have but will know when they
answer. The same company also makes Zip-Lok bags and many
other products. Saran Wrap is polyethylene.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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