A well geometry for multiwell plates is provided, wherein a well is formed with an open end, a closed end and a side wall extending therebetween, the side wall including four spaced-apart rectangular panels and four rounded corners. The corners are each located to join, and extend between, a pair of adjacent panels. With rounded corners, less wicking is experienced than with flat corners designs. In addition, the rectangular panels provide relatively larger perimeters than with comparable-sized ...

A method for assembling a multiwell plate assembly, and a multiwell plate assembly prepared thereby, are provided. The method includes providing a lid for a multiwell plate body having at least one channel being formed therethrough; positioning the lid in proximity to a gasket member; applying sufficient negative pressure to the channel to draw the gasket member towards the lid; positioning the lid above a multiwell plate body, while continuing to apply negative pressure to the channel; emplacin...

A method for assembling a multiwell plate assembly, and a multiwell plate assembly prepared thereby, are provided. The method includes providing a lid for a multiwell plate body having at least one channel being formed therethrough; positioning the lid in proximity to a gasket member; applying sufficient negative pressure to the channel to draw the gasket member towards the lid; positioning the lid above a multiwell plate body, while continuing to apply negative pressure to the channel; emplacin...

A well geometry for multiwell plates is provided, wherein a well is formed with an open end, a closed end and a side wall extending therebetween, the side wall including four spaced-apart rectangular panels and four rounded corners. The corners are each located to join, and extend between, a pair of adjacent panels. With rounded corners, less wicking is experienced than with flat corners designs. In addition, the rectangular panels provide relatively larger perimeters than with comparable-sized ...

Multiwell plates with lids that reduce evaporation in the wells adjacent the edge of the plates are disclosed. The lids control the amount of evaporation from the multiwell plate.

A plate assembly for useful for in vitro fertilization procuedures such as receiving ova and for forming, evaluating, holding, manipulating and culturing embryos includes a base with an apportioned top surface and a sidewall. The top surface has a plurality of open wells embedded therein for receiving ova to be cultured. The wells are substantially cylindrical and have substantially flat closed bottoms to facilitate microscopic examination of the well contents. The assembly includes a removable ...

A multiwell plate scanner comprises a detector for measuring an attribute of a sample which is scanned continuously over wells of a multiwell plate. A signal obtained during the scan may be sampled and digitized based on detector position over the multiwell plate. The scanner is also disclosed for scanning microarrays, bio-chips and areas of samples not having physical separations. The scanner may be used in a high throughput screening system comprising a storage and retrieval module, a sample d...

A cover effective to releasably seal a multiwell container, such as a microtitration plate, is disclosed. The cover contains a pad, fashioned from a flexible polymer sheet, and a plurality of resiliently compressible ridges formed on the sheet. The ridges are deformable, such that application of pressure applied to the cover is effective to form a fluid-tight seal between the pad and the well openings. The ridges extend from the pad sufficiently to break the seal upon release of the pressure.

A micro-titre test plate includes a thermoplastic incubation tray having an array of a plurality of wells extending therethrough, a filter, and a thermoplastic harvester tray for supporting the filter sheet. The harvester tray has a plurality of apertures therethrough arranged to be registerable with the bottoms of the wells in the incubation tray. To prevent cross-talk between the wells along the filter, the facing surfaces of the harvester tray and incubation tray are provided with mating ridg...

An apparatus is provided for the detection and semi-quantitative measurement of analytes. The assay results are visualized by the formation on a filter of a colored annular or circular spot, the diameter of the spot being related to the concentration of the analyte of interest. The filter on which the assay results are visualized is divided into multiple regions by strips of non-porous tape crossing the filter surface. The invention also includes a component for diluting sample to a suitable con...