The ornamental design for a shower head for laboratories, as shown and described.
FIG. 1 is a front perspective view of the shower head with a flange of the shower head removed to expose dual nozzle portions of the shower head and caps of the dual nozzle portions opened to expose respective nozzle openings in each nozzle portion;
FIG. 2 is a front elevation view of the shower head of FIG. 1 with the caps of the dual nozzle portions closed;
FIG. 3 is another front perspective view of the shower head of FIG. 1 with the caps of the dual nozzle portions closed and with the dual nozzle portions rotated approximately 180°;
FIG. 4 is a front perspective view of the shower head of FIG. 3 with the flange attached and with the caps of the dual nozzle portions closed;
FIG. 5 is a front elevation view of the shower head with the caps of the dual nozzle portions opened and with the flange attached;
FIG. 6 is another front perspective view of the shower head of FIG. 1 with the caps of the dual nozzle portions closed; and,
FIG. 7 is a top view of the shower head with the caps of the dual nozzle portions opened and the flange attached.