Hi, Last week I posted about a load of stuff I got from a local high school, Today I went back to get the rest of it. This time I found two packets of DK-50, another developer which is new to me, I also found a big can of Dektol (to make five gallons) and three cans of Microdol-X (one gallon cans). My question is this, will the chemicals in the cans still be ok? My other question is this, I have been unable to find any useful information on Polydol, DK-50 or D-19. I have an urge to try them out but don't know where to start (i.e. dilutions, times, etc). The film I am mainly using now is HP5+. If someone could give me some ballpark times I would be most grateful. I realize D-19 is a high contrast developer but this is the very reason I want to experiment with it. Polydol on the other hand I know nothing about other then what is written on the package, it says that is meant for use with 8X10 film and does not mention 120 or 35.