[pure-silver] Re: Rollei Retro 100 Curl Problems

"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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