Metering pump

[skimask]

Hi,
I'm looking for a cheapo metering pump, I figured I would provide my own motor and controller, maybe a stepper motor..........
need the flow to be smooth as possible (no pulses).
Accuracy of rate, maybe a few percent
I want to pump some mineral oil at 95 F at a rate of around 0.1 liter/minute
Thanks for any idea's, as you can see I don't know half the questions yet
Steve

I've got no idea if this will work, but here goes...
In the model airplane world, you've got this thing called a 'Dave Brown 6 Shooter'.
Basically, it's a rubber hose sitting in a round channel. A few wheels mounted on a round disk come around and compress this hose (with a gap in between the wheels), pushing the fluid inside along. Shouldn't be that hard to run it for a bit and calculate what each 'turn' of the wheel will dish out, and it should be consistent. It might pulse a bit, maybe put a small accumulator tank on the outlet side.
Do a search on 'Dave Brown 6 Shooter' and you'll see what I'm talking about.