Method for monitoring a fluid transfer process

US7917313B2 · kind B2 · utility

Assignee

• Roche Molecular Systems, Inc. · US

Inventors

• Guenter Ziegler · Polling, DE
• Peter Wenzig · Munich, DE

Key dates

• Filing date: Aug 27, 2008
• Grant date: Mar 29, 2011
• Expiry date: Sep 2, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N35/1016
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention relates to a method for monitoring a fluid transfer process, including the steps: providing an allowable pressure profile; detecting a pressure occurring in the course of the fluid transfer process; comparing detected pressure with the allowable pressure profile and signaling an error, if the detected pressure is not within the allowable pressure profile. The allowable pressure profile is defined by interpolation points, the interpolation points being based on a probability function representing a family of pressure courses of a plurality of fluid transfer processes. The allowable pressure profile can be divided into at least two distinct process sections, each section corresponding to a distinct process phase of the fluid transfer process. The probability function is calculated from a family of test pressure curves and reflects the statistical behavior of the pipette system. The present invention further relates to a computer readable medium for storing interpolation point information as well as to a kit-of-parts comprising a device implementing the inventive method, together with a computer readable medium for storing interpolation point information.