FIG. 1 is a front perspective view of the cap for a solution bag of my invention;
FIG. 2 is a front view of the cap of the invention;
FIG. 3 is a side view of the cap of the invention;
FIG. 4 is a rear view of the cap of the invention;
FIG. 5 is a rear perspective view of the cap of the invention;
FIG. 6 is an exploded side view of the cap of the invention;
FIG. 7 is a front perspective environmental view; and,
FIG. 8 is a side perspective environmental view.
The broken line showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design. The dash dot lines immediately adjacent to the claimed areas in the views represent the boundaries of the claimed design. None of the broken lines form any part of the claimed design.