I claim the ornamental design for a laser holder for chromatographic equipment, as shown and described.
FIG. 1 is a perspective view of a laser holder for chromatographic equipment showing my new design.
FIG. 2 is a side view thereof;
FIG. 3 is a further side view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines are included for illustrating unclaimed portions of the laser holder for chromatographic equipment and form no part of the claimed design.