Patent ID: 6566145
Filing Date: 2003-05-20
Classification: B01L,G01N,Y10T

Abstract:
A pipette tip for solid phase extraction comprising:a housing having a proximal end with a lower opening adapted for the passage of liquid and a distal end with an upper opening dimensioned to fit on the end of a pipettor; a first frit inside said housing and above said lower opening; a second frit inside said housing and between said first frit and said upper opening; and a plurality of adsorptive particles inside said housing and confined between said first frit and said second frit, wherein said adsorptive particles and said second frit are spaced apart so as to form a void therebetween, and wherein said void is dimensioned so that said adsorptive particles can travel freely within said void allowing for thorough mixing between said adsorptive particles and a sample solution when said sample solution is in said void.