Torus34 said:
you're getting some developer in the stop and some stop in the fixer each time you develop a print. And you don't worry about it a bit, do you? Of course not.
Well actually I do. The problem isn't stop in the fixer, it's developer in the fixer. I mix all stop bath as a one shot, and I don't always use it anyway, so the only things I'm using funnels for are developers, fixers, and toners, and I don't want any of those things mixing. Some toners mixed with fixer become deadly gas. Yes, fixer is going to be contaminated through the normal process of print making, but that doesn't mean it's not worth it to try to minimize the contamination. Could you get away with one funnel? Sure, but a funnel is only 50 cents!
Fixer is also the most expensive chem; if you have an active darkroom even saving a teaspoon here and there adds up over time. A funnel pays itself off many times in just one year. I've been using the same funnels for 8 years now. They've paid off the investment.
Why have dedicated trays, tongs, graduates, etc...? Weak fixer won't ruin your day for weeks, or even years. My Photo 101 teacher was a darkroom **** about cleanliness and avoiding as much contamination as possible, so it was drilled into us that extra tupperware is cheaper and less frustrating in the long run. Keep the dry side dry, and keep the wet side from mixing, and no one gets hurt.
EDIT: I guess I could change that to "my teacher was a darkroom fascist", for the profanity checker
