Apparatus for carrying out biochemical reactions

An apparatus for carrying out biochemical reactions in microtiter plates which comprises

• (a) a holder (42, 43) for receiving and holding a microtiter plate (35;
• 44) that is provided with a plurality of separate wells, each well having an inlet opening and a bottom outlet to expel liquid in the wells, and
• (b) a movably mounted device (5;
• 47) for applying gas pressure to the wells of said microtiter plate (35;
• 44), said gas pressure application device (5;
• 47) comprising a plate member (12) of at least the same length and width as said microtiter plate (35;
• 44), said plate member (12) having an inflatable collar (31;
• 48) of an elastic material around the periphery facing the periphery of said microtiter plate and being adapted to sealingly connect the gas pressure application device (5;
• 47) over the microtiter plate so as to thereby form a single gas application space (34;
• 50) defined by the microtiter plate (35;
• 44), the inflatable collar (31;
• 48) and the plate member (12;
• 47), whereby the same pressure will be quickly and simultaneously applied to the inlet openings of all wells.