Cleaning and liquid contact with solids – Processes – With work or work parts movable during treatment
Patent
1985-08-06
1986-11-11
Metz, Andrew H.
Cleaning and liquid contact with solids
Processes
With work or work parts movable during treatment
134 254, 134117, 422102, 436531, B08B 102
Patent
active
046220763
ABSTRACT:
A method for washing an assay tray includes the following steps. A solid pad of absorbent material, such as a layer of cotton sandwiched between a cardboard and a nonwoven fabric, is firstly placed over the wells of an assay tray. The assay tray is then tilted or inverted together with the pad to allow the serum to drain off and be absorbed in the pad. The assay tray is then inserted in a washing device and submerged in the stationary washing liquid. Subsequently, the washing device is moved relative to the washing liquid to let the washing liquid flow freely in and out of the wells of the assay tray to thoroughly wash the beads and the wells, while the beads will be blocked from falling out of the wells by means of the special design of the washing device. The washing device has a broad opened wall which confines a network of ribs formed by intersections of transverse and longitudinal walls. The intersecting portions substantially superimpose the center of the wells respectively. Each intersecting portion is of a size such that the beads will be blocked from falling out when the assay tray is inserted in the washing device, while the washing liquid flows freely in and out of the wells.
REFERENCES:
patent: 3353796 (1967-11-01), Roberts
patent: 3516861 (1970-06-01), Menkes et al.
patent: 4078943 (1978-04-01), Saurenman
patent: 4320087 (1982-03-01), Chau et al.
patent: 4425438 (1984-01-01), Bauman et al.
Cohen Sharon T.
General Biologicals Corp.
Metz Andrew H.
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