On 17 August 2010 07:17, Richard Knoppow wrote:
"It was suggested by Micheal Gudzinowicz, a Phd chemist who used to frequent the pure-silver list:
To one liter of water add
2.5ml of Photo Flo 200 (half the recommended amount).
30ml of 70% isopropanol (rubbing alcohol).
Soak the film in this mixture for a minute or two and hang up to dry without squeegeeing.
The amounts are not critical and stronger alcohol can be used. Make sure the rubbing alchol you get is just isopropanol and water, not ethyl alcohol, which will be denatured with a solvent, or "flavored" rubbing alcohol with oil of wintergreen or something else in it."