... 4.Automatic Calibration Capability Product IntroductionThis precision pump can be installed by YZ1515x,YZ2515x,DG-1 and DG-2 four kinds of ... pump heads, with flow rate from 0.05-380mL ... odious working environment Functions and features1.applicable pump heads: YZ1515x,YZ2515x,DG-1 ,DG-22. display rpm and flow rates3. calibration capability ...