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Online Sample Preparation and analytical QC

Zinsser Analytic GmbH
26 May 2008
Greg Smith
Analyst / Analytical Chemist

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Quality control is not only an issue at the end of the production step, but is also used for monitoring of the entire process itself, offering the possibility of optimising the process. For “full-monitoring” quick and efficient sample preparation linked to analytical measurement (GC, HPLC; TLC, LC/MS, etc.) is required.

Zinsser Analytic offers a robotic workbench CALLI QC linking sample preparation to analytical measurement. The samples are placed on the instrument, when they arrive from production and can be introduced continuously. On the platform the samples are prepared for the analytical measurement according to the users requirements: samples are weighed, diluted, heated, vortexed, filtered, etc. before they are transferred to the analyser (GC, HPLC; TLC, LC/MS, etc.). A vast range of modules is available for the sample preparation process, e.g. handling of liquids, powders and viscous media, pH-adjustment. Barcode control ensures the tracking of the individual samples throughout the entire process.

CALLI QC provides a walk-away system for the chemists.

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Gas ChromatographyGas chromatography (GC) is an analytical technique used to separate and quantitate mixtures of small and volatile compounds. Gas chromatographs or GC systems include components such as GC columns, detectors, pumps and autosamplers. Choose from packed or capillary GC columns, flame ionization (FID), photoionization (PID) electron capture detectors and selective or non-selective detectors. Find the best gas chromatographs in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.UHPLC and HPLCHigh performance liquid chromatography (HPLC) and ultra high performance liquid chromatography (UHPLC), also known as UPLC, are analytical techniques used to separate, identify and quantitate components of complex mixtures including biological samples such as proteins and lipids as well as chemical mixtures of pesticides, drugs and oils. Both techniques are liquid chromatographic methods but differ by operating pressures (HPLC < 6000 psi < UHPLC ). Components of HPLC and UHPLC systems include columns, detectors, pumps, autosamplers and column heaters. Explore a range of UHPLC and HPLC columns for your specific sample needs including reverse phase, normal phase, ion exchange, HILIC, ion exclusion and size exclusion columns. For more specialized HPLC, explore FPLC, countercurrent LC and simulated moving bed systems. Find the best UHPLC and HPLC equipment in our peer reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Sample PreparationSample preparation can improve the quality and speed of separation techniques. Products to assist sample preparation include filtration equipment, evaporators, membranes and sieves.LC-MSLC-MS (liquid chromatography-mass spectrometry) systems and equipment are used for separation and quantitative analysis of complex mixtures, combining liquid chromatography and mass spectrometry. Quantify proteins, contaminants, pesticides or screen for drug metabolites with a high level of sensitivity. LC-MS systems and equipment include reverse phase, normal phase and specialized columns integrated with various MS detectors such as time-of-flight (TOF), quadrupole, orbitrap or ion trap mass analyzers. LC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzer give greater sensitivity and resolving power to your analysis. Find the best LC-MS equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Process ChemistryProcess chemistry is an important stage of drug development for scaling-up drug production or chemical synthesis reactions. It is useful for optimizing economical and efficient drug production. Process chemistry uses reactors and pump systems as well as reagents, standards and buffers.Thin Layer ChromatographyThin-layer chromatography (TLC), also called planar chromatography, is an inexpensive and simple liquid chromatographic technique used to separate and identify small amounts of compound in a mixture, monitor progress of a reaction or determine purity of substance. TLC plates come in multiple sizes with common adsorbent layers being silica, aluminum oxide or cellulose and high-performance (HP-TLC) plates are also available for increased sensitivity. Other equipment needed includes TLC developing chambers, applicators, TLC sprayers and visualizing devices, such as a viewing cabinet and UV lamp. Find the best TLC products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.

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