Paul, you said 180 degrees F for 18 minutes. That will cook the film. Use 80 degrees at 18 minutes. When I said 12 to 15 minutes at 90F the default is 12 minutes. 15 minutes will be quite contrasty. (In fact, maybe you will find 12 min at 90F to be too contrasty: don't worship what I say. Experiment.)
About PET plastic: you are not completely wrong. One interesting thing I observed with these bottles is that if you put dry powder (any kind) into a dry bottle and then place the bottle in liquid, after a few weeks the powder will be damp! But....seemingly NOT the other way around. (Or does evaporation take place and quickly dry up: I think so, Paul.) If there is developer in the bottle and you keep the bottle in a dry environment, the developer will stay fine. Why? Here's why: (again, always the caveat) I have stored the developer concentrates for months and months and, you know, after that time and without ever opening the bottle, there is a slight space between the top of the liquid and the top of the rim. Apparently, some tiny amount has evaporated! But, the concentrate is fine because as it evaporated (osmosis) it left no oxygen in its wake! If the bottle is opened, at this point, letting oxygen in, I would add the marbles. True and I am glad you brought up this 'minor' point, Paul: glass is always the BEST, but PET works within the parameters.
I would imagine that other manufacturers' color developers would also work if you dilute 1 + 14 and add the carbonate. Test a small amount (pro-rated of course) and see.
Yes, format-wise I could have been a tiny bit more organized with my 'rant' but it is all there and written in understandable, unambiguous language. Thank you for noticing all these things, Paul. - David Lyga
Last edited by David Lyga; 01-01-2013 at 03:18 PM. Click to view previous post history.