The ornamental design for a filter for cleaningwater of endoscope, as shown and described.
FIG. 1 is a perspective view of a filter for cleaning water of endoscope showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and
FIG. 7 is a bottom view thereof.
The broken line portions of the filter for cleaning water of endoscope in all views represent unclaimed portions of the claimed design and form no part thereof.