ok i have started a project that i am printing on platinum toned kallitypes. i am using sodium acetate (200g per 1 ltr) developer with no potassium dichromate. my prints are turning out ok so far however some of them are proving quite hard to clear in my citric acid clearing baths The reason i havent used dichromate are the obvious health implications it can have. at the rate of 6ml of 2% dichromate per 1 ltr of developer how dangerous is it? my main concern is that the room i have to print in isnt very well ventilated and the results i have had without the dichromate havent been too bad so far. also at the moment i am mixing up a 1ltr batch of developer, pouring all the developer over the print and then pouring it back into the bottle and using it until my highlights dont clear. is this the right way to do it? if i replenished the developer with 100ml of fresh developer every 100 square inches do i just pour 100ml of developer away for every 4 5x5" prints i am doing, and then replace with 100ml of fresh developer? sorry i know it may sound like a really dumb question!