Response to photo-flo handling

The foam caused by excessive agitation has a tendency to get stuck in the sprocket holes of 35mm film and cause marks when dry. Immersing film for longer than 30 seconds causes exceessive scum buildup, emulsion swelling and will mark the film when dry as well.. As far as flinging and popping the film to remove excess water.Be careful the emulsion is VERY fragile at this point so the less mecanical contact the better. Be carful you don't crease the base as well. BTW I plan on trying LFN as soon as my photoflow is used up. I am a little hesitant to use any wetting agent with alcohol as an ingredient. Many years ago there was a product on the market that proported to dry film instantly. It was basically soapy water & alcohol. It dried the film instantly all right with the most pronounced streaks I have ever seen! What I do is dilute photo flo 50% of recomendation (I dont use distilled water but all the water entering the darkroom is filtered) and gently immerse the film (on the reel) in the graduate I mix the photo flo in. I then gently swirl the graduate around for 30 sec. Then dump the solution, remove the film & hang to air dry. My darkroom has a dust filtration system. RO

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