Tissue culture cluster dish

A laboratory cluster dish comprising:

• a base having a plurality of wells joined in a unitary structure for receiving materials, said base having a solid and continuous bottom wall which defines the bottoms of all the wells, said wells having side walls that extend upwardly from said bottom wall,
• a rim formed on the periphery of the base and extending upwardly above the upper surface of the bottom wall to retain any fluid on the base which may spill from the wells, said rim being substantially shorter than the side walls of the wells so as to permit direct viewing of the side walls of the wells without looking through the rim,
• a cover having a top closure wall adapted to be supported on the base to cover the wells,
• and a bead formed on the bottom wall of the base and extending downwardly from the lower surface of the base to support the base on a surface with the bottoms of the wells off said surface.

A laboratory cluster dish comprising:

• a base having a plurality of wells joined in a unitray structure for receiving materials, said base having a solid and continuous bottom wall which defines the bottoms of all the wells, said wells having side walls that extend upwardly from said bottom wall,
• a rim formed on the periphery of the base and extending upwardly above the upper surface of the bottom wall to retain any fluid on the base which may spill from the wells, said rim being substantially shorter than the side walls of the wells so as to permit direct viewing of the side walls of the wells without looking through the rim,
• a cover having a top closure wall adapted to be supported on the base to cover the wells,
• and braces interconnecting adjacent wells on the base to strengthen the structure, the tops of said braces being below the tops of the wells so as to prevent material which spills from one well flowing on the braces into another well.

A laboratory cluster dish comprising:

• a base having a plurality of wells joined in a unitary structure for receiving materials, said base having a solid and continuous bottom wall which defines the bottoms of all the wells, said wells having side walls that extend upwardly form said bottom wall,
• a rim formed on the periphery of the base and extending upwardly above the upper surface of the bottom wall to retain any fluid on the base which may spill from the wells, said rim being substantially shorter than the side walls of the wells so as to permit direct viewing of the side walls of the wells without looking through the rim,
• a cover having a top closure wall adapted to be supported on the base to cover the wells, and
• support means formed as part of the base for engaging the cover for supporting the cover on the base in a second position wherein the cover is held at an angle with respect to the base to permit access to the wells by a pipette or other instrument while preventing contamination of the wells by airborne substances.