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  • Analysis of Protosappanin B in Sappan Lignum by Capillary Zone Electrophoresis

    Analysis of Protosappanin B in Sappan Lignum by Capillary Zone Electrophoresis

    Tuesday, September 23, 2014
    Application Note
    Luzhi Sui, Xiangqian Hou, Xinmin Li, Dunqing Wang
    Sappan Lignum, the dried heartwood of Caesalpinia sappan L, has been used as an herbal medicine since ancient times. Sappan Lignum promotes blood circulation; removes blood stasis; reduces swelling, ... read more
  • Specifying a Water Purification System for the Laboratory

    Specifying a Water Purification System for the Laboratory

    Thursday, November 07, 2013
    Technical Article
    Steve Mines
    The selection, operation, and maintenance of a reverse osmosis (RO) water purification system should be straightforward. However, systems are often 1) inaccurately specified, i.e., not matched to the... read more
  • Optimizing HPLC Sample Preparation

    Optimizing HPLC Sample Preparation

    Monday, February 06, 2012
    Technical Article
    Caitlin Smith
    Sample preparation is an important component for analysis in high-performance liquid chromatography (HPLC)/ultra high-performance liquid chromatography (UHPLC). This article outlines commonly used ... 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
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