I got an old bag of Dektol in a bunch of darkroom stuff I got off craigslist. It's one of those paper-looking bags, and not the newer plastic-potato-chip-type bags. I'm running low so I just decided to mix it up. But as soon as it started coming out of the bag, I realized something was very wrong. The powder was deep brown, and turned the liquid opaque. I figured this means it was bad so I poured it all down the drain, and it looked like strong truck-stop coffee. I would have never guessed it would change color so radically. The thing is, I also have a bag of Microdol-x and a package of fixer, probably about the same age. Can I tell by the looks of the Microdol if it's gone bad? I'd hate to waste a roll finding out. I suppose I can test the fixer to see if it works by using a film leader.