Howdy! I find myself in an interesting situation: I've come into possession of a CASE of Kodak DK-50 (24 cans of the stuff)!!! There's not a whole lot on the Internet in terms of information on DK-50; even the Kodak website is sketchy. I'm assuming it's an obsolescent, if not obsolete, developer, and the Kodak folks haven't bothered to post much information. The Kodak website isn't doing too much for Old School these days. First off... is there a maximum shelf life on it? This case of developer is apparently military surplus from the late 1960s. The cans say that the powder is a binary mixture; one part is in a top of the can compartment, and the other is in a bottom of the can compartment. To me that says there hasn't been a whole lot of chemical reaction going on inside of the cans all these years. Anybody gotta Church Key handy? That's what the cans specify for opening the stuff up! ;o) Next... from the little info I've been able to find on the Net, it sounds like it's just the thing for the 4" x 5" Tri-X that my Speed Graphic spits out. Anybody got experience with Plus-X? How about HSI (in 35mm format)? Ditto TX400? Next... I see nothing about using DK-50 with paper. Is it useful there? If so, anyone out there have experience with it? On this one I'm REALLY reaching... but is it useful for my latest form of insanity... Minox 8x11??? Thanks in advance for any info!