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  • 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

  • Product Intelligence: High-Purity Gases on Demand: A Laboratory Gas Generators Buyers' Guide

    Thursday, May 24, 2012
    Technical Article
    T. Keith Brock
    Laboratory gas generators are a safer, more convenient, and more economical means of generating gases in the laboratory, and as such are a good alternative to cylinder-based gas sourcing. Because of ... read more

  • 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

  • Generating Nitrogen for Nuclear Magnetic Resonance Spectroscopy

    Thursday, September 01, 2011
    Application Note
    Peter Froehlich Pat Kriwoy
    Nuclear magnetic resonance (NMR) spectroscopy is an extremely important tool in the elucidation of molecular structure and is commonly used to obtain information about the interaction between ... read more

  • Designing Safety Into Site-Wide Gas Distribution Systems

    Tuesday, June 14, 2011
    Application Note
    Mike Marone Ron Geib
    When setting up a gas distribution system in a laboratory or any other type of facility, the safety of all personnel must be taken into consideration. read more

  • Increased Throughput in Method 8270 Analysis

    Monday, January 01, 2007
    Application Note
    William D. Goodman Frank DeLorenzo
    Method 8270 is a GC-MS method created by the U.S. EPA Office of Solid Waste for the analysis of semivolatile organics by gas chromatography-mass spectrometry. read more

  • Automated Chemical Ionization in GC-MS

    Monday, January 01, 2007
    Application Note
    Chris Sandy Jean-Francois Garnier Bernhard Rothweiler Fred Feyerherm Sihem Ben Mahmoud Harry F. Prest
    Gas chromatography with mass spectrometric detection using chemical ionization (CI) has demonstrated great utility in a wide variety of application areas ranging from forensics to environmental to ... read more
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