Petri dish with single-handed lid connection and removal

A petri dish comprising:

• a dish providing a bottom wall with peripheral dish sidewalls extending upward from the bottom wall to a dish rim to define a dish volume;
• and
• a lid providing a cover to the dish and having an upper wall with peripheral lid sidewalk extending downward from the upper wall to a lid rim;
• wherein one of the peripheral dish sidewalls and peripheral lid sidewalk include ledges extending radially in a first direction and another of the peripheral dish sidewalk and peripheral lid sidewalk includes teeth extending radially in a second direction opposite the first direction;
• wherein the lid is adapted to be rotated with respect to the dish to bring the ledges and teeth into a locked state with axial alignment of teeth below the ledges preventing removal of the lid through an abutment of the ledges and teeth, and the lid is adapted to be rotated with respect to the dish to move the ledges and teeth to an unlocked state out of axial alignment allowing removal of the lid by allowing the ledges and teeth to pass by each other during removal without abutment;
• and
• wherein the lid and dish are adapted to rotate with respect to each other into or out of the locked state and without interference between the lid and dish when the teeth are below the ledges.