nuno_campos1 Posted September 15, 2006 Share Posted September 15, 2006 Hi, After some reading here I decided to use white wine vinegar as stop bath. My father has a grocery, so it will cost me nothing. The question I have is about the dilution of the vinegar. Normally it has 6% acidity, but the working solution must have 1,5% or 2%? That means a 1:3 or 1:2 dilution, right? Other thing, should I use the same dilution for film and paper? And how many 35mm films and sheets of paper (8x10) can I work with one working solution before it looses is strength? Or is it better to use it has one-shoot only? Thanks in advance. Best regards, Nuno Campos. Link to comment Share on other sites More sharing options...
edward_vargas1 Posted September 15, 2006 Share Posted September 15, 2006 Why not use plain water as a stop bath for films and prints? I use Formulary TF-4 Fixer for both film and prints which requires a water stop bath before placing in the fixer. You will need to change the water when it starts to show a slight color - this will depend on how larger your trays are. Cheaper and no need to worry about mixing vinegar or stop bath and smell. Good luck. Link to comment Share on other sites More sharing options...
chris_waller Posted September 15, 2006 Share Posted September 15, 2006 I've used white (distilled) vinegar as stop bath and, yes, your dilutions are correct based on 6 percent acidity. I also bought 5 gms of bromocresol purple dye to make indicating stop-bath - a tiny amount of the dye is sufficient. Link to comment Share on other sites More sharing options...
mendel_leisk Posted September 15, 2006 Share Posted September 15, 2006 I *never* managed to use up a bottle of the official "indicater" stuff, the dilutions are known, and it doens't cost much. As others have said, you can even use water. But if you want a stop bath, I'd say use the photograhic grade. Link to comment Share on other sites More sharing options...
don_mckeith Posted September 15, 2006 Share Posted September 15, 2006 I use a water stop for film and paper, but in my final film rinse I use about a Tbsp. of white vinegar. Someone on this board suggested that----very clean negs---thank you very large(whoever) Link to comment Share on other sites More sharing options...
gonzalo_echeverria Posted September 22, 2006 Share Posted September 22, 2006 hi, the ratio i was given by an old timer was 1:50. it takes about 20 - 30 secs to cut the alkalinity of the developer down. hope this helps. Link to comment Share on other sites More sharing options...
leon_yuhanov Posted September 27, 2006 Share Posted September 27, 2006 i use 1+9 dilution. WHen i was starting out with my darkroom, this norwegian guy told me that one. For 1 Liter of stop(paper only) 100ml white clear vinegar 900ml cold water i have never used it on film though Leon Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now