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  • Applications of PTR-MS in Medicine and Biotechnology

    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
  • A High-Purity Water System for Pharmaceuticals Testing

    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
  • Accurate Determination of Amino Acids in High-Carbohydrate-Containing Samples

    Accurate Determination of Amino Acids in High-Carbohydrate-Containing Samples

    Sunday, October 01, 2006
    Technical Article
    Valoran P. Hanko, Jeffrey S. Rohrer
    In a high-sensitivity amino acid analysis (AAA) technique that does not require sample derivatization, both amino acids and carbohydrates are separated by high-performance anion-exchange ... read more
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