Patent ID: 7477997
Filing Date: 2009-01-13
Classification: B01L,G01N,Y10T

Abstract:
1. A method for verifying that an aspiration process for aspirating a liquid between a pipette and a container is free of the adverse affects of clots in the liquid or of an insufficient liquid volume by: (1) determining the actual profile of an aspiration pressure curve for a pipette used in the aspiration process; (2) determining a mathematical representation of the determined actual profile of the aspiration pressure curve; (3) using numerical analysis to determine whether or not the difference between the actual profile of the aspiration pressure curve and the mathematical representation of the actual profile of an aspiration pressure curve is less than the standard deviation of the residuals of linear regression analysis of an aspiration pressure curve measured for either: (4) using the results of the numerical analysis to confirm that the aspiration process has been performed using a liquid that is free of adverse affects.