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Washers designed for automatic removal of dirt, stains, and/or biological debris (i.e., washing) from microplates (e.g., 96-well plates). These washers typically include an enclosure, a plate holder, pumps, hoses for connection to solution supplies and to a vacuum source, and a programmable control unit (e.g., for controlling wash cycles, soak time, and mode of dispensing). Microplate washers may perform several preestablished and/or customized cycles of operation, typically including buffer washing, soaking and nonsoaking washes, and aspirate operations in any chosen order. They are suitable to clean microplates used in many laboratory procedures, including fluorescence, chemiluminiscence, DNA probes, and enzyme immunoassay.
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