Lid for Test Tubes

1. Lid for test tubes

1 . 1 is a left side view of a lid for test tubes showing my new design;

1 . 2 is a right side view thereof;

1 . 3 is an enlarged bottom view thereof;

1 . 4 is an enlarged front view thereof;

1 . 5 is an enlarged rear view thereof;

1 . 6 is a top perspective view thereof; and

1 . 7 is a top view thereof.

The dashed lines depict portions of the lid for test tubes that form no part of the claimed design.