I have recently found a Rainin mixer in my lab. Since I have several of the old Rainin Rabbit HP pumps, I figured I would try to make a gradient system. From the look of the mixer, and reading the literature (a very slim brochure), it SEEMS the mobile phase ratios could be controlled via pump speeds (manual controls on the front of the units). I cannot figure out how to actually control the gradient.

I know and understand these systems are old, so please go easy on me. This is more of a project than a requirement.

I currently run Buck Scientific detectors with Peak Simple data collection (they were here when I got here). Any information or suggestions would be greatly appreciated.