Archived posting to the Leica Users Group, 2002/06/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]It's been decades since I've done wet darkroom stuff, but they used to sell stop bath indicator solution to tell you when it was exhausted. I never exhausted mine. I always leaned toward replacing instead of replenishing. JLS At 04:22 PM 6/24/02, you wrote: >Water works for paper as well as film..... > >If you want to get fussy..... > >Vinegar is 5% acidity >Glacial Acetic Acid is 28% (GAA) > >You could just use 5 times more vinegar as GAA..... or, >to 1 gallon of water... add 2 oz of GAA or 10 ounces of Vinegar.... > >Use WHITE vinegar.... > >The purpose of the stop is to provide an acidic environment to stop the >development prosess, that requires a alkaline environment.... >Use of water just takes longer and does not stop as fast the development >process.., as it dilutes the developer.... not changing the PH... > > > >Frank Filippone >red735i@earthlink.net > > >-- >To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html