CPC B01L 3/502715 (2013.01) [B01L 3/0293 (2013.01); B01L 3/50273 (2013.01); B01L 2200/143 (2013.01); B01L 2300/0829 (2013.01); B01L 2300/0877 (2013.01); B01L 2400/049 (2013.01); B01L 2400/0633 (2013.01)] | 12 Claims |
1. An assembly comprising,
a needle unit comprising n hollow needles, wherein n is greater than one;
a flow cell unit comprising m flow cells, wherein m is greater than one, each flow cell having an input and an output, and a test surface on which ligands can be provided located between the input and output;
a first selector valve unit which is fluidly connected between the needle unit and flow cell unit, and wherein said first selector valve unit is configured so that it is operable to selectively fluidly connect any one of the n hollow needles with said m flow cells in said flow cell unit;
a pumping means which is selectively operable to provide negative pressure;
a second selector valve unit which is fluidly connected between said pumping means, and the output of each flow cell in the flow cell unit.
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