Re: [Leica] Re: Darkroom Question

[Bill Satterfield <cwsat@istate.net>]

thanks, I may try the water as a stop. Will one fill of the tank do it 
and for how long.  I assume water will not work on prints.

Jim Brick wrote:

> At 09:04 AM 3/25/2002 -0600, Bill Satterfield wrote:
>
>> Was in the darkroom over the weekend developing film.  I use  a tank. 
>> On one batch, I used a  ounce of short stop to 15 1/2 ounces of  
>> water rather than a 1/2 ounce. Film looks OK.  What harm did I do and 
>> what can I expect?. A mental error caused by waiting to long to 
>> develop rolls of film. Perhaps, I ought to develop more frequently. 
>> Thanks
>
>
>
> Actually, no harm. I have never used a stop bath in film processing in 
> my 50 years of darkroom work. It is unnecessary. But too much stop 
> won't bother anything anyway unless you are using a developer 
> containing carbonate. Which there are none of nowadays.
>
> Hydroxide will evolve CO2 but Rodinal is about the only normal 
> contrast developer containing it. But I have never known anyone to 
> have stop bath problems, regardless of concentration.
>
> When I started darkroom work in the 50's, there were carbonate 
> containing developers being used and stop bath had the possibility of 
> causing "pin holes" which is gas forming within the emulsion, rapidly 
> being released, causing an eruption thus a pin hole. Because of this, 
> I was taught (Brooks Institute of Photography) to simply use water as 
> a rinse between the developer and fix with film. It has served me well 
> for all of these years.
>
> Jim
>
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