[pure-silver] Re: drips on roll film

"Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
I use a final rinse made of Photo Flo and alcohol. The Photo Flo is at about half the recommended strength and the alcohol is isopropyl about 28ml of 99% or about 40ml of 70% per liter of rinse.
Ditto here. 1:20 in 90% isopropanol for a stock solution, then 1:20 in steam distilled water for working solution. Finger squeegee. No spots. I often leave the film in for ~5 minutes to get the final bit of purple out - which also gets the 
final bit of calcium et. al. water salts out of the emulsion.

The pre-dilution makes it much easier to measure out
the PhotoFlo.  I find if I pre-dilute it to working
strength in a gallon of distilled water I get biological growth in the jug after a few weeks. 

==
Nicholas O. Lindan
Cleveland Engineering Design, LLC
Cleveland, Ohio 44121

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