Method and device for characterisation of multiple samples of one or various dispersions

US8265882B2 · kind B2 · utility

Assignee

• L.U.M. Gesellschaft fur Labor-Umweltdiagnostic & Medizintechnik mbH · DE

Inventors

• Dietmar Lerche · Berlin, DE
• Titus Sobisch · Berlin, DE
• Torsten Detloff · Demmin, DE
• Frank Babick · Dresden, DE
• Michael Stintz · Dresden, DE

Key dates

• Filing date: Mar 4, 2005
• Grant date: Sep 11, 2012
• Expiry date: Mar 4, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N15/042
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and a device for the automatic determination of selected physical and colloidal chemistry parameters by determining the attenuation of radiated waves through monodisperse or polydisperse dispersion samples subjected to gravitation or centrifugation, wherein during the segregation by means of centrifugation or gravitation, the instantaneous transmission IT(t, r) characterizing the current segregation status of the waves radiated with the intensity Io(t, r) and/or the instantaneous scattering IS(t, r) as a function of the position within the samples is repeatedly determined and recorded at high resolution at any arbitrary time for one or more wavelengths over the entire length of the sample or in selected partial sections of it, simultaneously for multiple and even concentrated samples with known and/or unknown physical and colloidal chemistry properties.