Vaughn, I am considering doing just that but only for the second half of the process (in the kitchen)
Originally Posted by Vaughn
I don't have the space to pour out 20x24 trays in the darkroom, but into wide mouthed jugs in the kitchen sink should be more do-able.
If I keep the liquid volumes down, it shouldn't slosh round the tray too uncontrollably as I try to lift the tray up to pour.
Water... used as Stop bath?
Today I went to a local photography store that rents darkroom time. I took a look inside to see what they had to offer before renting time. I noticed that they did not have any stop bath for developing film. I asked a worker there and she said that they used water... Will this have any negative effects on my film? Or is this not the big deal i thought it would be?
Oh and, if this is in the wrong section please forgive me (:
Not at all. I used water when I studied at college - it works just fine.
Just rinse film with the water before fixing and you'll be ok.
I use water after pouring out the developer and I have seen no side effects.
Water in this case won't be stop bath. It's more of a RINSE. Water does not neutralise the developer - or stop its activity, hence the name "stop". Water will just rinse the developer away and leave less in the film before it goes into the fixer. The developer will continue to act, though it would probably create any significant effect if the fixer is acid enough (assuming that it's the type used) and acts quick enough the undeveloped halide before the remaining, and yet to be neutralised, developer has the chance to work on them.
You should do the rinses quickly. Two or three if possible. That's to remove as much residual developer, and to weaken its alkalinity, as possible. A stagnant, extended rinse in an unchanged bath of water can lead to added silver densities. Think of the principle behind the dev-water-dev-water divided development procedures.
The alkaline carry over will make the fixer's life shorter. Not so much an issue with rented darkrooms where the chemicals are likely flushed down after each use.
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Lynette, it depends on who you want to believe. The film designers, engineers, and manufacturers all recommend using a stop bath with both paper and film. The following was copied from Ilford site. Kodak has something similar.
After development, rinse prints in an acid stop bath, such as ILFOSTOP or ILFOSTOP PRO.
A stop bath stops development immediately, reduces the risk of staining and will extend the life of the fixer bath. The use of a stop bath is strongly recommended.
Ilford ILFOSTOP stop bath brings develpment to an end, and prolongs the life of the fixer. Works quickly."
A cynical person might suggest that it was in Iford's interest to sell Ilford stop bath!
Originally Posted by fotch
My view is that it is a good idea to use a stop for prints to keep the fixer bath working longer and it is also a good idea to use it for film if you plan to re-use the fixer. If you use your fixer once then discard it though, the stop bath is of little (if any) benefit.
I've used both water, citric acid (smells less) or a weak solution of fixer as stop.
I have not noticed any difference in the end result from any of the approaches used, but I have to admit that I have not done any real/proper/scientific comparison.
The main purpose is as stated above that you remove developer before using the ordinary fixer.
Well, a stupid cynical person. There is no way for the film companies to insure that they will buy Ilford or Kodak Stop bath, and its not exactly a big market. I suppose that same cynical person would use really cheap crappy film, based on their logic.:rolleyes:
Originally Posted by Steve Smith
I was hoping that my inclusion of an exclamation mark would show my comment to be in jest. I don't use those silly smiley face thingies. Perhaps I should.
Originally Posted by fotch