The ornamental design for a microscopecartridgerack, as shown and described.
FIG. 1 is a top, front perspective view of a microscope cartridge rack;
FIG. 2 is a bottom, front perspective view thereof;
FIG. 3 is a bottom, back perspective view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a back view thereof;
FIG. 6 is a left-side view thereof;
FIG. 7 is a right-side view thereof;
FIG. 8 is a top view thereof;
FIG. 9 is a bottom view thereof; and,
FIG. 10 is a top, front perspective view showing disclaimed environment of the microscope cartridge rack.
The broken lines in FIGS. 1-9 depict portions of the microscope cartridge rack that form no part of the claimed design. The rest of the broken lines in FIG. 10 depict environmental subject matter and form no part of the claimed design.