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  • Guided Wave Radar at Genentech: A Novel Technique for Non-invasive Volume Measurement in Disposable Bioprocess Bags
    By Bryan Bean, Tim Matthews, Neria Daniel, Steve Ward, Brad Wolk, Genentech, Inc. Disposable bioprocess bags are increasingly being used in biopharmaceutical operations for buffer storage, buffer and media prep, bioreactors, product pooling and storage of bulk drug substance. Disposables offer
  • Basics of Design Engineering: Hydraulics New Sealing Systems Take the Heat
    Better materials meet OEM's tougher requirements. Excessive pressures and temperatures, as well as fluid incompatibility, have always spelled trouble for hydraulic cylinder seals. And the problems promise to continue. Tighter emissions regulations for mobile equipment, for instance, are leading
  • Selection Factors for Seals
    can help control thermal problems. In this method, an integral pumping ring on the rotating seal element circulates coolant through an inner chamber in the stuffing box. depends largely on temperature and chemical factors, and on abrasives. To minimize wear, the sealed fluid should be a good
  • Chromatography Roundup
    Also to be introduced this year, Paradis notes, are production-scale (up to 200-mm-diameter) supercritical fluid chromatography (SFC) systems. Pall is also seeing customers expand applications of its Mustang membrane chromatography line. "Manufacturers are starting to use membrane adsorbers
  • Medical Device Link . Blocking strategies for nylon membranes used in enzyme-linked immunosorbent assays
    a membrane is compressed against an absorbent pad and solutions are delivered to the top face of the membrane. The primary antibody is bound to the surface of the membrane, which is then blocked to prevent nonspecific binding. The analyte is presented in a test solution, which can be either a buffer

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