Apparatus for polyelectrolyte measurement with an ultrasonically driven liner

US5502389A · kind A · utility

Assignee

• Mutek Analytic GmbH · DE

Inventors

• Hermann Hochgraeber · Offenberg, DE
• Lutz Pickelmann · Munich, DE

Key dates

• Filing date: Jun 1, 1994
• Grant date: Mar 26, 1996
• Expiry date: Jun 1, 2014

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/60
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for automated polyelectrolyte measurement in process materials comprises a sample vessel with an outer wall defining a cylindrical cavity and with a reservoir of larger diameter above and in communication with the cavity. A liner for the cavity and the reservoir are made of an electrically insulating material such as polytetrafluoroethylene. To clean the apparatus there is also provided an ultrasonic oscillator which is mechanically coupled to the sample vessel. In order to improve the cleaning process, the liner and preferably also the reservoir are attached to the outer wall in such a way as to resist tensile and shear forces and the ultrasonic oscillator is attached to the outer wall. Preferably, the liner is attached to the outer wall by an adhesive.