Patent Number: 7,785,466

Title: Membrane filtered pipette tip

Abstract: An injection molded assembly forming a Membrane Pipette Tip having at least one bottom portion including a apex end for receiving a calibrated first volume of fluid, a cavity for holding said volume of fluid and a opening with shoulder for receiving the filter membrane. The pipette tip includes at least one upper body having a first opening for communication to a pipetter and a second opening for receiving the shoulder of the bottom portion. The bottom portion fused at the shoulder to the second opening of the upper body with the membrane therebetween to permanently attach the membrane filter to the pipette tip. The 2 part Membrane Pipette Tip can be constructed as a single tip or a plurality of upper and bottom portions with optional tubular members that can include overflow wells for containing fluid in excess of the first volume of fluid drawn into the Membrane Pipette Tip cavity.

Inventors: Smith; James C. (Hayward, CA)


International Classification: B01D 63/00 (20060101); B01L 99/00 (20100101); B01L 3/02 (20060101)

Expiration Date: 8/31/12018