Multiwell test apparatus

A multiwell test apparatus comprising a multiwell filter plate and a second palte for supporting said multiwell filter plate,

• said multiwell filter plate having a multiplicity of first wells extending from a plate, each of said wells comprising (a) a hollow member having two openings and extending from said plate and (b) a permeable barrier secured about said lower opening,
• at least a first access hole for accessing a liquid in said second plate
• and two posts formed on the undersurface of the filter plate which fit into holes on an upper surface of said second plate,
• said second plate having one or more wells to accommodate said first wells of the filter plate,
• said posts of said filter plate and said holes of said second plate being shaped to prevent contact of
• said first wells of said filter plate and said one or more wells of said second plate when said posts are fully positioned within said holes and to permit controlled lateral movements of said multiwell filter plate to permit contact of said first wells and said one or more wells of said second plate when said posts are partially removed from said holes and wherein one of said holes has a three-sided perimeter and a second of said holes is in the shape selected from the group consisting of a slot, an oval, or rectangle.

A multiwell test apparatus comprising a multiwell filter plate and a second plate for supporting said multiwell filter plate,

• said multiwell filter plate having a multiplicity of first wells extending from a plate, each of said wells comprising (a) a hollow member having two openings and extending from said plate and (b) a permeable barrier secured about said lower opening,
• at least a first access hole for accessing a liquid in said second plate
• and two posts formed on the undersurface of the filter plate which fit into holes on an upper surface of said second plate,
• said second plate having one or more wells to accommodate said first wells of the filter plate,
• said posts of said filter plate and said holes of said second plate being shaped to prevent contact of said first wells of said filter plate and said one or more wells of said second plate when said posts are fully positioned within said holes and to permit controlled lateral movements of said multiwell filter plate to permit contact of said first wells and said one or more wells of said second plate when said posts are partially removed from said holes and wherein one of said holes has a three-sided perimeter and a second of said holes is shaped as a slot.