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  • New Products for Gas Chromatography at Pittcon® 2014

    Tuesday, May 06, 2014
    Application Note
    Robert L. Stevenson, Ph.D.
    Pittcon® is changing rapidly. After decades where separation science including GC/MS and LC/MS dominated the meeting, a report by Dr. Matt Wilkinson in this issue demonstrates that optical ... read more

  • Advances in Gas Chromatography Instrumentation at Pittcon® 2013

    Friday, May 10, 2013
    Technical Article
    Robert L. Stevenson, Ph.D.
    The buzzwords for Pittcon® 2013 in gas chromatography instrumentation were “smaller,” “portable,” and “helium.” Despite the fact that some of the major vendors did not exhibit, others were on hand ... read more

  • Ask the Expert: Using Rheology to Design Better Products—Yield Stress and How to Measure It

    Tuesday, July 24, 2012
    Application Note
    John Duffy
    Successfully manipulating the rheology of a product during its development enables formulators to deliver desirable characteristics—the right feel and texture, great stability, and optimal usability ... 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

  • 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

  • Small-Scale Vane Rheometry

    Tuesday, August 02, 2011
    Application Note
    David Moonay
    Vane rheometry continues to become more well-known and popular. read more

  • Separation Science Highlights From Pittcon® 2011

    Tuesday, May 10, 2011
    Technical Article
    Robert L. Stevenson, Ph.D.
    At Pittcon® 2011, most new products appeared to be evolutionary, not revolutionary. read more

  • Use of Rotational Vane Rheometry to Solve Practical Problems

    Saturday, August 01, 2009
    Application Note
    David J. Moonay
    Rheology is the study of the deformation of matter. A common definition is that rheology is the study of flow. Viscometry, in particular, is the measurement of viscosity or the resistance to flow. ... read more

  • Redefining the Rheometer

    Monday, October 27, 2008
    Application Note
    Steve Carrington
    The way in which materials flow or deform when a force is applied can have a direct impact on product performance. read more

  • Measuring Yield Stress

    Thursday, November 01, 2007
    Technical Article
    Richard Buscall Adrian Hill
    Various materials, typically gels or dispersions with a high concentration of suspended particles, can behave either as elastic solids or as liquids, depending on the degree of force or stress to ... read more

  • Flow Characterization: Selecting Appropriate Technology

    Tuesday, November 01, 2005
    Application Note
    Steve Carrington Joanne Langridge
    It is well known that measuring the rheological properties of materials contributes to the development of better products and helps predict end-use performance as well as the physical properties of a... 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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