... and DG-2 four kinds of pump heads, with flow rate from 0.05-1140mL/min.Graphic ... LCD displays the operation process, showing flow rate directly, which offers a friendly platform ... features1.applicable pump heads: YZ1515x,YZ2515x,DG-1 ,DG-22. display rpm and flow rates3. calibration capability ... enables the product to control more accurate flow rates4. graphic LCD together with rotary coded ...