gravastar Posted January 16, 2012 Share #21 Posted January 16, 2012 Advertisement (gone after registration) I've found you can usually remove "water marks" aka calcium carbonate deposits by re-immersing the film in dilute acetic acid (stop bath) which dissolves the carbonate. Wash the film again and rinse in deionised or distilled water to which a very small drop of washing up liquid has been added. Hang the film at an angle to dry so that the water runs down the sprocket holes on the lower edge as suggested by Andy. Bob. Link to post Share on other sites More sharing options...
Advertisement Posted January 16, 2012 Posted January 16, 2012 Hi gravastar, Take a look here Drop marks on BW film. I'm sure you'll find what you were looking for!
250swb Posted January 17, 2012 Share #22 Posted January 17, 2012 I have seen Photo Flo itself cause drop marks when it has been quickly mixed and the film quickly dunked in and then dried. It needs time for the concentrate to fully disolve and then the film needs to be immersed long enough for the mixture to absorb into the emulsion, displacing the pure water. Try to avoid agitation as this causes foaming, another cause of spots if not wiped off the neg. Steve Link to post Share on other sites More sharing options...
tuanvo1982 Posted March 24, 2012 Author Share #23 Posted March 24, 2012 Just picking up on this, I fold a piece of kitchen towel into a 'squeegy', place it around the film at one end then run it quickly and with hardly any pressure (just so the towel is making contact with the film), down the length of film. Hang to dry. Never any problems! That works perfectly Link to post Share on other sites More sharing options...
Jon Pop Posted March 25, 2012 Share #24 Posted March 25, 2012 It used to drive me crazy too...until I switched to distilled water. I mix my developer with it, and my stop and fix as well. I do my rinsing with tap water of course, but the final rinse I do with distilled water and the tiniest drop of Ilofotol. I do a gentle rinse with that, first in the reel in the tank, and then actually take the film and run it gently back and forth through that water. Then I hang it to dry in the shower....I almost never have drying marks on my negatives anymore. As for curling, I have had maddening curls with Tmax, TriX, and Agfa APX; I have very little curling with Ilford films (all types) or Fuji Neopan. While it's true I could put the negatives in sheets and then under a heavy book for a few days, having to wait a few days is something I'm not really into - I generally want to scan my negatives as soon as they're dry. Link to post Share on other sites More sharing options...
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