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  • The Best of Pittcon 2007
    Operational Excellence & Lean Six Sigma ), which introduced titration and materials characterization products, measurement instruments and microbalances. Of particular interest was the new LiQC (for liquid quality control) system for simultaneous determination of density, refractive index, pH
  • Beta testing an in-line monitor for moisture measurement in inert gas lines
    was described in an earlier issue of Designed to measure moisture levels in ultra-high-purity (UHP) nitrogen and argon gases, the monitor uses a piezoelectric quartz crystal microbalance (QCM) sensor. The quartz crystal is coated with a thin film of barium metal, with which moisture reacts irreversibly
  • Assure Batch Uniformity for Freeze-Dried Products
    , Pharmaceutical Manufacturing, 3 (4): 41-44 (2004). 14. Pikal, M., Shah, S., Senior, D., and Lang, A. Physical Chemistry of Freeze Drying: Measurement of Sublimation Rates by a Microbalance Technique, J. Pharmeutical Science, 72 (6): 635-650 (1983). 15. Scheaffer, G., Sum, L.,
  • Using an in-line monitor to obtain real-time moisture measurements (First of two parts)
    and polymer-coated quartz crystal microbalance (QCM)
  • Medical Device Link . Technology news
    in the oscillation as a sample interacts with the surface of the sensor. The quartz crystal microbalance-dissipation (QCM-D) technique has numerous applications, according to business development manager Goran Zelander, notably in the fields of medical diagnostics and biomaterials. The sensor
  • Medical Device Link .
    microbalance. dissipation, using systems like the equipment above. After several years of discussion, the chemical characterization standard, ISO 10993 Part 18, will soon be released as a final-draft international standard possibly in early 2003. Once the standard is voted on and then officially
  • Medical Device Link .
    , this effect has many useful applications, and piezoelectric sensors and actuators are used in various devices, including microphones, compact disc players, accelerometers, quartz crystal microbalances, and pressure monitors. Perhaps the most common application is found in electric lighters, in which
  • Medical Device Link .
    or a combination of methods, including limiting the amount of dimer, pressure monitoring with feedback control of the sublimation heater and active in-situ film-thickness monitoring such as quartz crystal microbalance. The process is friendly in that any material that can survive exposure to low vacuum

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