set PHD 2000 pump infuse rate to zero

[kwang305]

I wrote a small LabVIEW program to control the infuse rate of PHD 2000 pump. It works fine except when I change infuse rate to 0, the pump is still running at 0.01 ul/min. I was wondering if the pump treats '0' flow rate in another particular way or it is the format problem.

[GerdW]

Hi kwang,

did you check the pump's manual or asked the maker of these pumps?

The manual mentions some "min flow rates"…