B - Operations – Transporting – 01 – L
Patent
B - Operations, Transporting
01
L
222/2
B01L 3/02 (2006.01) G01N 35/10 (2006.01)
Patent
CA 1049976
ABSTRACT A Multiple Sample Pipetting Device is disclosed which is adapted to remove small predetermined volumes of liquid from a plurality of sample wells arranged in a compact rectilinear array, or conversely to transfer small predeter- mined volumes of liquid from one large reservoir container to a plurality of sample wells arranged in the same array. The apparatus has a plurality of small tubes extending downwardly with the upper end portion communicating with reservoirs that have a predetermined volume. A flexible diaphragm extends across all of the reservoirs, and the upper ends thereof are in communication with a common manifold chamber. The applica- tion of positive or negative pressure moves the diaphram downwardly and upwardly into contact with the lower and upper reservoir walls, respectively, and either extracts or expels liquid from the tubes. The manifold and tube holding portion of the apparatus is vertically movable so that the tubes can be lowered into the appropiate container to extract the pre- determined volume of liquid material.
258719
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