Quote Originally Posted by nworth View Post
The tube probably contains the metol. Many, many years ago, developers were packaged like this. Some will remember the two separate foil envelopes (or it you are really old, glass tubes) that made up Kodak M-Q developer packages. Unmodified metol reacts with sulfite to form an insoluble compound. Modern formulations use a phthalate coating that gets around the problem, but that came after your developer was made. You dissolve the metol first, then add the other stuff.
I have a number of ANSCO cans, D 17, the D47A, Permadol, ANSCO libs are pried off like paint cans libs. The D 17 has an inner container that is better sealed than the tube in the D47. Old Kodak cans like DK 50 are opened with a can opener, the DK 50 can has two compartments, one on each end.