Assay system

摘要

An assay apparatus comprising: i) an assay cartridge (52, 53) comprising at least one well (57-62) and a pipette (50) positionable in at least one said well; ii) a holder arranged to received said cartridge; iii) drive means operable to position said pipette in selected wells of said cartridge; iv) a gas pressure applicator couplable to said pipette whereby to cause liquid flow through said membrane; and v) a radiation detector operable to detect radiation from a well of said cartridge of said cartridge or from said pipette.

主权项

1. An assay cartridge comprising:
detachable base and cap members, the base member defining at least two wells, including a reading well that has (i) two parallel, planar side walls of light-transparent plastic, and (ii) an angled, planar base, of light-transparent plastic, joining the two parallel side walls, so as to allow the absorption of light passing through a liquid in the reading well to be measured at a full width of the well and also through a narrower width between one of the side walls and the angled base of the well; and a pipette, positionable in at least one of said two wells, wherein the pipette has a proximal end and a distal end, said distal end being closed by a liquid-permeable membrane.