_____\nHello All,\n\nI have been reading about divided developers for film. Never tried it;\nlooks promising though! Do any of you in this group have any experience\nwith this approach? The reason for my interest is the fact that i live\nin the country and that my house disposes of waste water via a septic\ntank system. Hence, i want to minimise the amounts of photographic\nchemicals entering the tank in case they kill the microbes.\n\nBelow is a divided developer formula; a variant on D-76 where BATH A and\nB can be kept for a long time:\nA BATH\nWater at 125F 3 cups\nMetol 1/2 tsp\nSodium sulfite 2 TBL\nHydroquinone 2 tsp\nPotassium bromide 1/8 tsp\nCold water to make 1 quart\n\nB BATH\nWater at 80-100F 3 cups\nSodium sulfite 2 TBL\nBorax 2 TBL\nCold water to make 1 quart\n\nProcess 2-4 minutes in A BATH, and the same time in B BATH, both at 68F.\nAgitate for 15 sec initially, and for about 5 seconds every half\nminute. Stop bath is not recommended after B BATH, a quick 1 min rinse\nin water is enough. Fix the film in the usual manner.\n\nA BATH will last indefinitely, and B BATH can be used for 20-30 rolls of\nfilm before any change in contrast or density should be noticed.\n\nThere is also a phenidone version of this formula to obtain increased\nfilm speed.