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  • Applications of PTR-MS in Medicine and Biotechnology

    Tuesday, June 14, 2011
    Technical Article
    Wolfgang Singer Jens Herbig Rene Gutmann Klaus Winkler Ingrid Kohl Armin Hansel
    Proton transfer reaction-mass spectrometry (PTR-MS) is a well-established analytical tool for the measurement of volatile organic compounds (VOCs), and offers real-time detection and ... read more

  • Statistics in Analytical Chemistry: Part 43—Pass-Fail Methods (Concluded)

    Monday, June 13, 2011
    Technical Article
    David Coleman Lynn Vanatta
    The previous article (American Laboratory, Apr 2011) ended with an unsolved problem: how to implement a pass-fail method if the blank matrix contains a non-negligible amount of the analyte. read more

  • A High-Purity Water System for Pharmaceuticals Testing

    Tuesday, February 01, 2011
    Application Note
    Nick Armstrong
    When Velesco Pharmaceutical Services needed high-purity water for research laboratories at its new facility in Plymouth, MI, it chose a water treatment system that would provide affordable HPLC-grade ... read more

  • The Benefits of Machine Washing Laboratory Glassware Versus Hand Washing

    Wednesday, October 01, 2008
    Application Note
    Lisa Choplo
    If the aim of the laboratory is to be cost-efficient and provide consistent results, hand washing should not be the process of choice for cleaning laboratory glassware. read more

  • A Membrane Extraction Technique Dedicated to Industrial Wastewater: Membrane-Assisted Solvent ...

    Tuesday, January 01, 2008
    Application Note
    Carole Vincelet David Benanou Jean Marc Roussel
    The use of membrane materials for the extraction of organic compounds has increased during the past few years for the extraction of analytes in bioanalysis and environmental, food, and industrial ... read more

  • Multicapillary Columns for Chromatography

    Tuesday, March 01, 2005
    Technical Article
    Yuri P. Belov Marina M. Ulyanova Vladimir N. Sidelnikov
    The principles and theory of high-speed capillary chromatography have been known since the 1960s. To realize the maximum speed capabilities, it is necessary to use capillaries with a diameter of ... read more

  • Rapid Testing of Toxic Chemicals

    Tuesday, March 01, 2005
    Application Note
    Nathalie Boucher Lucie Lorrain Marie-Eve Rouette Elisabeth Perron Nancy Déziel Louis Tessier François Bellemare
    The measurement of chlorophyll fluorescent signals from photosynthetic enzyme complexes (PEC) has becomeone of the most powerful indicators for ecophysiologists. read more

  • Miniaturized FTIR for Maximized Productivity

    Tuesday, March 01, 2005
    Application Note
    Ken Fredeen John S. Seelenbinder Mark L. Norman
    In today’s fast-paced business environment, many companies are under pressure to improve their productivity. This is especially true in the pharmaceutical industry, where reducing time-to-market ... read more

  • LC-MS With Simultaneous Electrospray and Atmospheric Pressure Chemical Ionization

    Tuesday, March 01, 2005
    Technical Article
    Wayne P. Duncan Patrick D. Perkins
    Today, liquid chromatography-mass spectrometry with electrospray ionization (LC-ESI-MS) is increasingly being used as the technique of choice for high-throughput pharmaceutical analysis. read more
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