Patent ID: 8152930

Claim:
A method for removing residual material at a plurality of sample wells located on a multiwell plate, the multiwell plate having a top side where sample wells are open to receive fluid and a bottom side opposite the top side, the method comprising: providing a wash reservoir having a base and a plurality of wash wells arranged to correspond to sample wells of the multiwell plate, each of the wash wells having a corresponding platform supported by and positioned above the base, the platforms being distinct and spaced from each other and each platform having an associated inlet; providing a cleaning fluid from a cleaning fluid supply to the inlet associated with each platform of the plurality of wash wells to form a flowing layer of cleaning fluid on each of the platforms; inverting the multiwell plate such that the top side of the multiwell plate is positioned under the bottom side of the multiwell plate; and contacting a rim of a sample well of the multiwell plate with the flowing layer of cleaning fluid at a corresponding wash well such that material at the rim of the sample well is contacted by the flowing layer of cleaning fluid.