Patent ID: 8808644

Claim:
A method for dispensing fluid into a microplate comprising the steps of: providing a microplate comprising a plurality of wells; providing a microwell cover comprising: a plurality of impermeable portions, each of said impermeable portions configured to shield a plurality of shielded wells; and a plurality of open portions, each of said open portions configured to be aligned above a plurality of accessible wells while permitting fluid access to said plurality of accessible wells; each of said impermeable portions disposed between different open portions; aligning said open portions with a plurality of originally accessible wells; dispensing fluid into at least one of said originally accessible wells in each of a plurality of rows by passing fluid through open portions corresponding to said originally accessible wells to which fluid is dispensed; subsequently moving said microwell cover relative to said microplate so that said open portions are aligned with different pluralities of newly accessible wells; and subsequently dispensing at least one fluid into at least one newly accessible well by passing said fluid through an open portion of a said microwell cover, wherein said newly accessible well was not an originally accessible well.