The ornamental design for a micropipettingdevice, as shown.
FIG. 1 is a front elevational view of a micropipetting device, showing my
new design, the rear elevational view being substantially a mirror image
thereof;
FIG. 2 is an elevational view of the right hand side shown in FIG. 1;
FIG. 3 is an elevational view of the left hand side shown in FIG. 1;