FIG. 1 is a perspective view of an ornamental design for a fluorometer according to the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is another side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view of an ornamental design of another embodiment of a fluorometer according to the present invention, in which dashed broken lines define unclaimed features;

FIG. 9 is a front elevational view of the fluorometer of FIG. 8;

FIG. 10 is a back elevational view of the fluorometer of FIG. 8;

FIG. 11 is a side view of the fluorometer of FIG. 8;

FIG. 12 is another side view of the fluorometer of FIG. 8;

FIG. 13 is a top view of the fluorometer of FIG. 8; and,

FIG. 14 is a bottom view of the fluorometer of FIG. 8.