Millipore Corporation

Sylvie Chavanne

Nolwenn Stephan

A filter cartridge which comprises a filter pack () formed by a flat filtering medium, a tubular sheath () with a perforated wall, surrounding the filtering pack, and two respective end caps () having a first disc () and a second disc () placed one on top of the other, each made from thermoplastic, with a portion of the filtering pack () situated along one of its edges and a portion of the sheath () situated along one of its edges () which are embedded in the second disc (), with the first disc () having a peripheral rim () which surrounds the relevant portion of the sheath () and with the sheath having a shoulder () opposite the edge of the rim () of the first disc ().

Filter cartridge

The present invention relates to the monitoring of polymers during their processing by the determination of optical scattering properties. According to one aspect of the invention, there is provided a monitoring system for a vessel for polymer processing and the like, comprising a monitoring cell for measuring the optical properties of the contents of the vessel, a feed path and a return path both connecting the cell to the vessel, and a pump connected in the feed or return path. According to another aspect of the invention there is provided a monitoring cell for measuring the optical properties of the contents of the cell, including a source for generating a laser beam through the cell, and a detector for detecting light scattered from the laser beam, preferably a linear camera and an optical system for focusing scattered light thereon.

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Arlington, MA, United States of America

Sylvie Chavanne