> I have been reading about divided developers for film.  Never tried it;
> looks promising though!  Do any of you in this group have any experience
> with this approach?  The reason for my interest is the fact that i live
> in the country and that my house disposes of waste water via a septic
> tank system.  Hence, i want to minimise the amounts of photographic
> chemicals entering the tank in case they kill the microbes.

> Below is a divided developer formula; a variant on D-76 where BATH A and
> B can be kept for a long time:
>   A BATH
>     Water at 125F       3 cups
>     Metol               1/2 tsp
>     Sodium sulfite      2 TBL
>     Hydroquinone        2 tsp
>     Potassium bromide   1/8 tsp
>     Cold water to make  1 quart

>   B BATH
>     Water at 80-100F    3 cups
>     Sodium sulfite      2 TBL
>     Borax               2 TBL
>     Cold water to make  1 quart

> Process 2-4 minutes in A BATH, and the same time in B BATH, both at 68F.
>  Agitate for 15 sec initially, and for about 5 seconds every half
> minute.  Stop bath is not recommended after B BATH, a quick 1 min rinse
> in water is enough.  Fix the film in the usual manner.

> A BATH will last indefinitely, and B BATH can be used for 20-30 rolls of
> film before any change in contrast or density should be noticed.

> There is also a phenidone version of this formula to obtain increased
> film speed.