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Peaks of Interest

LECO Corporation (St. Joseph, Missouri) recently opened a global support center at its headquarters to serve domestic and international customers. The building will house its service, customer training, and consumables departments. An auditorium, training rooms, cafeteria, and restrooms have been designed exclusively for customers attending training classes. Up-to-date technology has been installed to ensure service and training needs for all customers are met quickly and efficiently.

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Liquid-liquid extraction (LLE) is among the most widely used sample preparation methods. In this month's installment of "Sample Prep Perspectives," Ron Majors discusses newer LLE approaches that offer significant advantages over classical methods. The miniaturization of LLE has resulted in solvent and time savings, improved automation possibilities, and faster sample preparation. The techniques of single-drop microextraction, extraction in levitated droplets, flow injection-, membrane-based-, and solid-supported extractions are reviewed. Often, these techniques use the same immiscible solvent pairs of conventional LLE.

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This article describes a software solution for automating the chromatographic method validation process starting from experimental planning, data acquisition and processing, through final report generation in a seamless manner. All experimental planning and calculations are accomplished within the chromatography data software and, thus, are structurally validated, secure, and audit trailed. Highlights of the software are provided, including benefits to the analyst. The analysis of important method validation characteristics such as linearity, accuracy, and precision is automated. These characteristics and their acceptance criteria can be captured in a method template, which adheres to the company's standard operating procedure. This template method can then be used repeatedly by other scientists in the organization, hence, eliminating the need to create a new experimental plan each time a new validation is conducted.

The Column: January 2006

News All the news from January 2006 Opinion Zosimus questions whether we are being charged too much for our columns. Market Trends & Analysis Glenn Cudiamat provides a report on process analytical technology in the biotech and pharmaceutical industry. Evaluating analytical instrumentation using the Golf Score Card tool Timothy R. Baker, Steven H. Hoke II and L.M. Dobson ExTech, HTC-9 and Pittcon focus A useful update on these upcoming shows, together with a preview of some of the exhibitors' latest products. Q&A Ally Lewis from the University of York talks to The Column about his research into the analysis of organic compounds in the atmosphere. Supplies & services

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Size exclusion chromatography (SEC) coupled to light-scattering, viscometer and refractive index detectors is a common technique used for the characterization of polymers. In this article the solution conformations of two chimeric IgG3 antibodies were studied using this coupled triple detection technique. Conclusions indicate that the results allow hydrodynamic modeling of the antibody structures.

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Guest columnist Matt Przybyciel reviews the structure, behaviour and applications of both alkyl- and phenyl-fluorinated phases in HPLC. The author presents some guidelines on potential areas of application for alkyl and phenyl-fluorinated phases, in which conventional C8, C18 and phenyl phases might have insufficient selectivity or too strong retention.