Liquid chromatography instrumentation

The Waters pump was one of the first twin headed LC pumps to be produced and was probably the major factor in establishing Waters fine reputation in the field of liquid chromatography instrumentation. 

An overview and discussion is given of literature methods published after 1989 devoted to the ion-interaction chromatographic determination of inorganic anions. Seventy references are quoted. Ion-interaction chromatography makes use of commercial reversed-phase stationary phase and conventional high-performance liquid chromatography instrumentation. The basis of the technique, the modification of the stationary phase surface, the choice of the ion-interaction reagent as well as the dependence of retention on the different variables involved are discussed. Examples of application in the fields of environmental, clinical and food chemistry are presented. The experimental conditions of stationary phase, of mobile phase composition as well as detection mode, detection limit and application are also summarized in tables. 1997 Elsevier Science B.V. 

Since patent novelty is a somewhat abstract concept in the absence of context, it is helpful to consider another example. Gas liquid chromatography instruments... 

There are two important methods in which ions or, less often, neutral compounds in solution (often containing formic acid) have their solvent molecules stripped by evaporation, with simultaneous ionization leaving behind the ions for mass analysis. Coupled with liquid chromatography instrumentation, these methods have become immensely popular. 

N. M. Djordjevic, P. W. J. Eowler, and F. Houdiere, High temperature and temperature programming in high-performance liquid chromatography instrumental considerations, 7. Microcol. Sep. 11 (1999), 403-413. 

High Performance Liquid Chromatography instruments with integral PC control system and local printer... 

HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY INSTRUMENTATION QUALIFICATION... 

Overview of high performance liquid chromatography instrumentation... 

See also Food and Nutritional Analysis Overview Antioxidants and Presen/atives. Gas Chromatography Overview. Liquid Chromatography Instrumentation. Sweeteners. 

See also Bloassays Overview. Derivatizatlon of Analytes. Extraction Solvent Extraction Principles. Fluorescence Food Applications. Food and Nutritional Analysis Contaminants. Gas Chromatography Detectors Mass Spectrometry. Immunoassays Production of Antibodies. Immunoassays, Applications Food. Immunoassays, Techniques Enzyme Immunoassays. Liquid Chromatography Instrumentation Liquid Chromatography-Mass Spectrometry Food Applications. Sampling Theory. 

See alsa Chromatography Multidimensional Techniques. Environmental Analysis. Extraction Solid-Phase Extraction. Food and Nutritional Analysis Sample Preparation Contaminants Pesticide Residues. Forensic Sciences Drug Screening in Sport Illicit Drugs. Herbicides. Liquid Chromatography Instrumentation Clinical Applications Food Applications. Mass Spectrometry Peptides and Proteins. Pesticides. Pharmaceutical Analysis Sample Preparation. Proteomics. Sample Handling Automated Sample Preparation. Water Analysis Organic Compounds. 

See also Chromatography Overview. Liquid Chromatography Instrumentation Liquid Chromatography-Nuclear Magnetic Resonance Spectrometry. Nuciear Magnetic Resonance Spectroscopy Techniques Principles Multidimensional Proton Solid-State In Vivo Spectroscopy Using Localization Techniques. 

Detectors. Infrared Spectroscopy Overview. Liquid Chromatography Instrumentation Pharmaceuticai Appiications. 

See also Liquid Chromatography Instrumentation Amino Acids. Nucleic Acids Electrochemical Methods. 

See alsa Capillary Electrophoresis Overview. Electrophoresis Polyacrylamide Gels. Gas Chromatography Detectors. Laser-Based Techniques. Liquid Chromatography Instrumentation. 

In this paper we describe the first stages in the development of a complete, portable liquid chromatography instrument, which will be suitable for the rapid screening of samples in a wide variety of applications. 

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