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Photo Engineer · 06-15-2007, 02:27 PM

I don't know of any formula that used Cobalt salts. That is not to say there are none, but no Kodak formula I knew of did, nor did any from other manufacturers that I have studied.

PE

06-15-2007, 02:27 PM	#141 (permalink)
Photo Engineer Join Date: Apr 2005 Location: Rochester, NY Posts: 10,081	I don't know of any formula that used Cobalt salts. That is not to say there are none, but no Kodak formula I knew of did, nor did any from other manufacturers that I have studied. PE