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Chromatography Column

What is Chromatography?

It is a broad range of laboratory techniques used to separate and or to analyze complex mixtures. Chromatography may be preparative or analytical. Preparative chromatography seeks to separate the components of a mixture and Analytical chromatography normally for measure the relative proportions of analytics in a mixture.

Types of Chromatography

A chromatograph is equipment that enables a sophisticated separation e.g. gas chromatographic or liquid chromatographic separation.

Gas chromatography
Gas chromatography (GC), also sometimes known as Gas-Liquid chromatography, (GLC), is a separation technique in which the mobile phase is a gas. Gas Chromatography (GC) is used to separate volatile components of a mixture. Gas chromatography is always carried out in a column, which is typically "Packed" or "Capillary"

Liquid chromatography
Liquid chromatography (LC) is a separation technique in which the mobile phase is a liquid. Liquid chromatography can be carried out either in a column or a plane. Present day liquid chromatography that generally utilizes very small packing particles and a relatively high pressure is referred to as high performance liquid chromatography (HPLC).

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Liquid Column Chromatography $270 Liquid Column Chromatography

Quantitative Column Liquid Chromatography $270 Quantitative Column Liquid Chromatography

Gradient Elution in Column Liquid Chromatography $270 Gradient Elution in Column Liquid Chromatography

Chromatography $99.95 Leading researchers discuss the past and present of chromatography More than one hundred years after Mikhail Tswett pioneered adsorption chromatography, his separation technique has developed into an important branch of scientific study. Providing a full portrait of the discipline, Chromatography: A Science of Discovery bridges the gap between early, twentieth-century chromatography and the cutting edge of today’s research. Featuring contributions from more than fifty award-winning chromatographers, Chromatography offers a multifaceted look at the development and maturation of this field into its current state, as well as its importance across various scientific endeavors. The coverage includes: Consideration of chromatography as a unified science rather than just a separation method Key breakthroughs, revolutions, and paradigm shifts in chromatography Profiles of Nobel laureates who used chromatography in their research, and the role it played Recent advances in column technology Chromatography’s contributions to the agricultural, space, biological/medical sciences; pharmaceutical science; and environmental, natural products, and chemical analysis Future trends in chromatography With numerous references and an engaging series of voices, Chromatography: A Science of Discovery offers a diverse look at an essential area of science. It is a unique and invaluable resource for researchers, students, and other interested readers who seek a broader understanding of this field.

Column Handbook for Size Exclusion Chromatography $198 Column Handbook for Size Exclusion Chromatography is the first comprehensive reference to provide everything one needs to know about commercial analytical and preparative columns for size exclusion and gel filtration chromatography (SEC and GFC). SEC is now widely used as a quality assurance method in the polymer industry (both synthetic and biopolymers) to determine molecular weight and molecular weight distribution. The Handbook contains contributions from every column manufacturer around the world and from many experienced column users. It covers the technology, characterization, application, evaluation, maintenance, and quality control of analytical and preparative columns for SEC and GFC. Also included are columns for two closely related techniques, hydrodynamic chromatography and high osmotic pressure chromatography. Key Features * Evaluate and select columns with confidence for specific applications * Optimize separations and improve the ruggedness of analytical methods * Extend the service time of a column * Establish a quality-control program to ensure consistency in column performance * Avoid the expense of column damage or purchases that do not give the expected results

Columns for Gas Chromatography $134 Choosing the right column is key in Gas Chromatography Gas Chromatography (GC) is the most widely used method for separating and analyzing a wide variety of organic compounds and gases. There have been many recent advancements in both packed column and capillary column GC. With numerous options and considerations, selecting the right column can be complicated. This resource provides essential guidance for scientists and technicians, including: Methods of choosing both capillary and packed columns Selection of dimensions (column length, I.D., film thickness, etc.) and type of column Guidelines for proper connections of the column to the injector and detector United States Pharmacopeia and National Formulary chromatographic methods ASTM, EPA, NIOSH, and OSHA column selection specifications Information on the advantages of computer assistance in GC and multidimensional GC Comprehensive information on column oven temperature control Columns for Gas Chromatography: Performance and Selection is a hands-on reference for scientists and technicians using GC.

Advances in Chromatography $189.95 Illustrating developments in separation science and chromatographic analysis, this volume investigates trends in chemometrics, proteomics, column technology, and element-selective detection for pharmaceutical, medical, industrial and environmental applications.

Size Exclusion Chromatography $70.1 High Quality Content by WIKIPEDIA articles Size exclusion chromatography (SEe is a chromatographic method in which molecules in solution are separated based on their size (more correctly, their hydrodynamic volume). It is usually applied to large molecules or macromolecular complexes such as proteins and industrial polymers. Typically, when an aqueous solution is used to transport the sample through the column, the technique is known as gel filtration chromatography, versus the name gel permeation chromatography which is used when an organic solvent is used as a mobile phase. SEC is a widely used Polymer characterization method because of its ability to provide good Mw results for polymers. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 92 Publication Date: 2010/07/28 Language: English Dimensions: 6.00 x 9.00 x 0.22 inches

Handbook of Process Chromatography $170 This book will update the original edition published in 1997. Since the publication of the first edition, the biotechnology and biologics industries have gained extensive knowledge and experience in downstream processing using chromatography and other technologies associated with recovery and purification unit operations. This book will tie that experience together for the next generation of readers. Updates include: - sources and productivity - types of products made today - experiences in clinical and licensed products - economics - current status of validation - illustrations and tables - automated column packing - automated systems New topics include: - the use of disposables - multiproduct versus dedicated production - design principles for chromatography media and filters - ultrafiltration principles and optimization - risk assessments - characterization studies - design space - platform technologies - process analytical technologies (PATs) - biogenerics - comparability assessments Key Features: - new approaches to process optimiaztion - use of patform technologies - applying risk assessment to process design

Modern Size-Exclusion Liquid Chromatography $150 The Second Edition of Modern Size-Exclusion Chromatography offers a complete guide to the theories, methods, and applications of size-exclusion chromatography. It provides an unparalleled, integrated, up-to-date treatment of gel permeation and gel filtration chromatography. With its detailed descriptions of techniques, data handling, compilations of information on columns and column packings, and tables of important solvents and reference materials, the book offers readers everything they need to take full advantage of this popular macromolecular characterization technique. Since publication of the first edition in 1979, there have been many important advances in the field of size-exclusion chromatography. This Second Edition brings the book thoroughly up to date, with expert coverage of: New and emerging industrial and research applications Practical aspects of size-exclusion chromatography (SEC) and multidetector and multidimensional SEC technologies for polymer architecture and copolymer analysis Updated information on the latest equipment and techniques New best practices for the lab SEC in relation to polymer characterization techniques such as GPEC, LCCC, and rheology Throughout the text, detailed examples guide you step by step through all the latest techniques and applications. With its extensive revisions and updates written by leading experts and pioneers in the field, Modern Size-Exclusion Liquid Chromatography remains the definitive resource for the broad range of researchers and scientists who use HPLC and GPC methods.

Aqueous Size-Exclusion Chromatography $270 The rapid development of new packings for aqueous size-exclusion chromatography has revolutionized this field. High resolution non-adsorptive columns now make possible the efficient separation of proteins and the rapid and precise determination of the molecular weight distribution of synthetic polymers. This technology is also being applied to the separation of small ions, the characterization of associating systems, and the measurement of branching. At the same time, fundamental studies are elucidating the mechanisms of the various chromatographicprocesses. These developments in principles and applications are assembled for the first time in this book. Fundamental issues are dealt with: the roles of pore structure and macromolecular dimensions, hydrophobic and electrostatic effects, and the determination and control of column efficiency. High-performance packings based on derivatized silica are reviewed in detail. Special techniques are thoroughly described, including SEC/LALLS, inverse exclusion chromatography, and frontal zone chromatography. Attention is focussed on special applications of size-exclusion methods, such as the characterization of micelles, separations of inorganic ions, and Hummel-Dreyer and related methods for equilibrium systems. Protein chromatography is dealt with in both dedicated sections and throughout the book as a whole. This is a particularly comprehensive and authoritative work - all the contributions review broad topics of general significance and the authors are of high repute. The material will be of special value for the characterization of synthetic water-soluble polymers, especially polyelectrolytes. Biochemists will find fundamental and practical guidance on protein separations. Researchers confronted with solutes that exhibit complex chromatographic behavior, such as humic acids, aggregating proteins, and micelles should find the contents of this volume illuminating.

Introduction to Modern Liquid Chromatography $132 The latest edition of the authoritative reference to HPLC High-performance liquid chromatography (HPLC) is today the leading technique for chemical analysis and related applications, with an ability to separate, analyze, and/or purify virtually any sample. Snyder and Kirkland's Introduction to Modern Liquid Chromatography has long represented the premier reference to HPLC. This Third Edition , with John Dolan as added coauthor, addresses important improvements in columns and equipment, as well as major advances in our understanding of HPLC separation, our ability to solve problems that were troublesome in the past, and the application of HPLC for new kinds of samples. This carefully considered Third Edition maintains the strengths of the previous edition while significantly modifying its organization in light of recent research and experience. The text begins by introducing the reader to HPLC, its use in relation to other modern separation techniques, and its history, then leads into such specific topics as: The basis of HPLC separation and the general effects of different experimental conditions Equipment and detection The column—the "heart" of the HPLC system Reversed-phase separation, normal-phase chromatography, gradient elution, two-dimensional separation, and other techniques Computer simulation, qualitative and quantitative analysis, and method validation and quality control The separation of large molecules, including both biological and synthetic polymers Chiral separations, preparative separations, and sample preparation Systematic development of HPLC separations—new to this edition Troubleshooting tricks, techniques, and case studies for both equipment and chromatograms Designed to fulfill the needs of the full range of HPLC users, from novices to experts, Introduction to Modern Liquid Chromatography , Third Edition offers the most up-to-date, comprehensive, and accessible survey of HPLC methods and applications available.

Retention and Selectivity in Liquid Chromatography $270 This book brings together a number of studies which examine the ways in which the retention and selectivity of separations in high-performance liquid chromatography are dependent on the chemical structure of the analytes and the properties of the stationary and mobile phases. Although previous authors have described the optimisation of separations by alteration of the mobile phase, little emphasis has previously been reported of the influence of the structure and properties of the analyte. The initial chapters describe methods based on retention index group increments and log P increments for the prediction of the retention of analytes and the ways in which these factors are influenced by mobile phases and intramolecular interactions. The values of a wide range of group increments in different eluents are tabulated. Different scales of retention indices in liquid chromatography are described for the comparison of separations, the identification of analytes and the comparison of stationary phases. Applications of these methods in the pharmaceutical, toxicology, forensic, metabolism, environmental, food and other fields are reviewed. The effects of different mobile phases on the selectivity of the retention indices are reported. A compilation of sources of reported retention index values are given. Methods for the comparison of stationary phases based on the interactions of different analytes are covered, including lipophilic and polar indices, shape selectivity comparisons, their application to novel stationary phases, and chemometric methods for column comparisons.

Modern Advances in Chromatography $524.15 Chromatography is the separation method for biological molecules from the analytical to the preparative scale. Few of the recent advances in life science, whether in proteomics or in the industrial production of recombinant therapeutics, would have been possible without the help of chromatographic separations. Concomitantly, chromatography nowadays stands for much more than a batch column packed with porous particles. In this book eminent experts from academia and industry introduce the reader to some of the recent new developments in this exciting area. Ranging from evolving nanoanalytical techniques to advances in the material sciences and artificial antibodies and finally continuous large scale separations of the most fragile biologicals, this book should provide interesting reading material for students and practitioners from various fields. Author: Freitag, Ruth/ Freitag, Ruth/ Allington, R. W. Series Title: Advances in Biochemical Engineering Biotechnology (Hardcover) Binding Type: Hardcover Number of Pages: 283 Publication Date: 2002/08/05 Language: English Dimensions: 9.21 x 6.14 x 0.69 inches

Gradient Techniques in Preparative Chromatography $135.42 Chromatographic separations are usually realized in isocratic mode, i.e., with constant temperature, pressure or solvent composition of the mobile phase during the process. However, it is well known that the adsorption behavior of the system can be strongly affected by changes of these operating parameters in gradient mode. In the work presented here several aspects of applying the gradient technique for preparative scale of both batch and continuous chromatography are discussed. This analysis is included in the main PART II of the work. It starts from the examination of a batch system consisting of a single column. Subsequently, strategies of using gradient in a continuous separation with a parallel multicolumn arrangement and with the SMB system are discussed. Before analyzing the gradient technique the application of mathematical models of process dynamics for predicting chromatographic separations is thoroughly examined in PART I of the work. Moreover, in PART I several aspects of the application of numerical methods for solving the model equations are discussed. Author: Antos, Dorota Binding Type: Paperback Number of Pages: 148 Publication Date: 2009/09/07 Language: English Dimensions: 9.00 x 6.00 x 0.34 inches

CHROMATOGRAPHY OF STEROIDS $270 CHROMATOGRAPHY OF STEROIDS

Chromatography of Antibiotics $270 Chromatography of Antibiotics

Ion Chromatography $320 Ion Chromatography

EXTRACTION CHROMATOGRAPHY $270 EXTRACTION CHROMATOGRAPHY

THE SCIENCE OF CHROMATOGRAPHY $270 THE SCIENCE OF CHROMATOGRAPHY

Stationary Phases in Gas Chromatography $270 The primary aim of this volume is to make the chemist familiar with the numerous stationary phases and column types, with their advantages and disadvantages, to help in the selection of the most suitable phase for the type of analytes under study. The book also provides detailed information on the chemical structure, physico-chemical behaviour, experimental applicability, physical data of liquid and solid stationary phases and solid supports. Such data were previously scattered throughout the literature. To understand the processes occurring in the separation column and to offer a manual both to the beginner and to the experienced chromatographer, one chapter is devoted to the basic theoretical aspects. Further, as the effectiveness of the stationary phase can only be considered in relation to the column type, a chapter on different column types and the arrangement of the stationary phase within the column is included. The secondary aim of this book is to stimulate the development of new and improved standardized stationary phases and columns, in order to improve the reproducibility of separations, as well as the range of applications.

Preparative Liquid Chromatography $270 This volume provides a straightforward approach to isolation and purification problems with a thorough presentation of preparative LC strategy including the interrelationship between the input and output of the instrumentation, while keeping to an application focus. The book stresses the practical aspects of preparative scale separations from TLC isolations through various laboratory scale column separations to very large scale production. It also gives a thorough description of the performance parameters (e.g. throughput, separation quality, etc.) as a function of operational parameters (e.g. particle size, column size, solvent usage, etc.). Experts in the field have contributed a well balanced presentation of separation development strategies from preparative TLC to commercial preparative process with practical examples in a wide variety of application areas such as drugs, proteins, nucleotides, industrial extracts, organic chemicals, enantiomers, polymers, etc.

Liquid Chromatography in Biomedical Analysis $270 This book presents a guide for the analysis of biomedically important compounds using modern liquid chromatographic techniques. After a brief summary of basic liquid chromatographic methods and optimization strategies, the main part of the book focuses on the various classes of biomedically important compounds: amino acids, catecholamines, carbohydrates, fatty acids, nucleotides, porphyrins, prostaglandins and steroid hormones. The different chapters discuss specialized techniques pertaining to each class of compounds, such as sample pretreatment, pre- and post-column derivatization, detection and quantification.

CHROMATOGRAPHY OF ALKALOIDS $270 CHROMATOGRAPHY OF ALKALOIDS, PART A

High Performance Liquid Chromatography in Phytochemical Analysis $239.95 The powerful, efficient technique of high performance liquid chromatography (HPLC) is essential to the standardization of plant-based drugs, identification of plant material, and creation of new herbal medicines. Filling the void in this critical area, High Performance Liquid Chromatography in Phytochemical Analysis is the first book to give a complete description of the techniques, materials, and instrumentation of column HPLC and its application to essentially all primary and secondary plant metabolites. Hailing from around the world and with vast expertise in HPLC phytochemical analysis, the contributors present a global, authoritative view of the field. The book looks at the role of HPLC in the analysis of herbal drugs, quality control of plant products in dietary supplements, and chemosystematics. It also covers the phytochemistry, pharmacology, and biological role of plant metabolites as well as various modes and techniques of HPLC analysis. The book then focuses on HPLC separation, identification, and quantification of particular classes of compounds in a variety of sample types, including plants, plant extracts, and plant-derived products.Along with its companion volume Thin Layer Chromatography in Phytochemistry, this comprehensive book presents the most important analytical approaches used in phytochemical analysis. It will help in solving problems connected with practical separations and the analyses of plant extract fractions of active metabolites.

Microbore Column Chromatography Vol. 45 : A Unified Approach to Chromotography $253.45 No Synopsis Available

75 YEARS OF CHROMATOGRAPHY $270 75 YEARS OF CHROMATOGRAPHY

Chemical Derivatization in Gas Chromatography $270 Chemical Derivatization in Gas Chromatography

Chemical Derivatization in Liquid Chromatography $270 Chemical Derivatization in Liquid Chromatography