FIG. 1 is a perspective view of a reverse osmosis cartridge end showing the new ornamental design, the portions shown in broken lines forming no part of the design sought to be patented;
FIG. 2 is a front view thereof, the front and rear views being a mirror image, and the portions shown in broken lines forming no part of the design sought to be patented;
FIG. 3 is a left side elevational view thereof, the left and right views being a mirror image, and the portions shown in broken lines forming no part of the design sought to be patented;
FIG. 4 is a top plan view thereof, the portions shown in broken lines forming no part of the design sought to be patented;
FIG. 5 is a bottom plan view thereof, the portions shown in broken lines forming no part of the design sought to be patented;
FIG. 6 is a perspective view of a second embodiment of a reverse osmosis cartridge end showing the new ornamental design, the portions shown in broken lines forming no part of the design sought to be patented;
FIG. 7 is a front view thereof, the front and rear views being a mirror image, and the portions shown in broken lines forming no part of the design sought to be patented;
FIG. 8 is a left side elevational view thereof, the left and right views being a mirror image, and the portions shown in broken lines forming no part of the design sought to be patented;
FIG. 9 is a top plan view thereof, the portions shown in broken lines forming no part of the design sought to be patented; and,
FIG. 10 is a bottom plan view thereof, the portions shown in broken lines forming no part of the design sought to be patented.