[pure-silver] Re: Rollei Retro 100 Curl Problems
- From: "Nicholas O. Lindan" <nolindan@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sat, 28 Feb 2009 07:45:33 -0500
"Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
I usually add some alcohol to Photo-Flo. Use the
Photo-Flo at half strength (about 2.5ml per liter of
solution) and add about 30ml of 70% isopropyl rubbing alcohol
per liter.
You mentioned this some time ago, and following your advice
I have been using this technique for several years.
My variation is to make a 10% solution of photo-flo to
alcohol and use it at 1:40. This makes measuring easy
as I don't have to measure out small volumes nor am I
dealing with a viscous liquid.
I pour out a bit of the alcohol from a 16oz bottle of
isopropyl, add 50ml [1.6oz] of photo-flo and bring the
volume back to 16oz with the reserved alcohol. I keep
the stock in the bottle the alcohol came in, attaching
a new label.
The alcohol makes a sort of super wetting agent
of the Photo-Flo.
It certainly does. You wouldn't think such a small
amount of alcohol would have such a large effect.
But a 10% alcohol content in wine will cause it to
tear in the glass.
--
Nicholas O. Lindan
Cleveland Engineering Design, LLC
Cleveland, Ohio 44121
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