I do not know about Unicolor, but you can get 16 rolls out of a quart of Kodak developer if you add time after every four rolls, and do them all within six weeks of making the chemicals. (1st time 3:15, 2nd time 3:23.) I never take it all the way to the fourth run through. I use the first two for "important" stuff, and the third for less important stuff (snapshots, cross processing, etc.). There couldn't be that much difference between the developers in the Unicolor and Kodak kits.