Patent ID: 6117394
Filing Date: 2000-09-12
Classification: B01L,G01N,Y10T

Abstract:
A pipette tip in combination with a pipetter, said combination comprising:said pipetter comprising a barrel and a suction device in communication with the barrel for drawing up to a first volume of fluid into the pipette tip;said pipette tip comprising a pipette tip body defining at least one interior frustum shaped cavity having an apex end for receiving the fluid, a base for attachment to said barrel in a fluid tight relationship, a first formed portion including said base, and a second formed portion including the apex end for receiving the drawn fluid, and an annulus located between the first formed portion and the second formed portion, said second formed portion between said apex end and said annulus defining a second volume which is greater than said first volume; anda particulate air filter membrane for passing particulate free air to said pipetter, said membrane extending across the pipette tip body at the annulus and being fused to the pipette tip body and over said annulus between the first formed portion of the pipette tip and the second formed portion of the pipette tip.