Thursday, January 17, 2013
Application Note
Robert L. Stevenson
Expanded bed adsorption (EBA) was introduced in 1999 with adsorbents that were used for pressure-driven packed beds. These had densities in the range of 1.1–1.5 g/mL, which was not much higher than ...
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Technical Article
Robert L. Stevenson
A marketplace is usually dynamic, with a cross-current of disparate interests meeting to find mutual satisfaction.
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Technical Article
Gregory P. Martin
Advances in technology for the preparation of solutions have the potential to improve accuracy in the testing of pharmaceutical samples.
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Thursday, September 01, 2011
Technical Article
Heidi Fleischer, Kerstin Thurow
The enantiomeric composition of proline is commonly determined using conventional analytical methods such as HPLC, GC,
and CE.
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Technical Article
Zeenat Ara Lila, Paulette Allen, Tameka Greenwood, Kadeem Bartley, Rafida Idris, Mahtabuddin Ahmed
Glycoxidative modification of proteins involving free radical intermediates and reactive carbohydrates leads to complications in diabetes, atherosclerosis, and Alzheimer’s disease.
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Wednesday, April 06, 2011
Technical Article
Mark Dawson
As the science of HPLC has evolved over the years, we have witnessed many changes to HPLC chemistry and instrumentation.
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Tuesday, February 01, 2011
Technical Article
Jia Luo, Quanyi Wang, Yiwen Zhang, Hang Song, Shun Yao
As a common intermediate in the synthesis of numerous pharmaceuticals, a-bromobutyric acid displays chirality at the carbon bound to the bromine.
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Tuesday, February 01, 2011
Technical Article
Chris Gilles
Ultrahigh-speed liquid chromatography-mass spectroscopy instruments can accelerate analysis times by at least tenfold compared to conventional LC-MS-MS systems.
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Application Note
Anton Ginzburg, Tibor Macko, Robert Brull
Functionalized polyolefins, such as copolymers of ethylene vinyl acetate (EVA), are a commercially important polymer commodity.
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Technical Article
Christopher Pohl, Srinivasa Rao, Kelly J. Flook, Charanjit Saini, Maria Rey, Andy Woodruff, Jim Thayer, Yury Agroskin
Over the last decade, monolith technology has progressed from a promising approach conceived by Fréchet, Švec, Huber, and others to a well-developed separation tool.
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Tuesday, September 28, 2010
Technical Article
Eduard Rogatsky, Matthew Gallitto, Daniel T. Stein
Check valves are a vital mechanical component of HPLC pump hardware. A detailed description of check valve function and hardware designs is given in Ref. 1.
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Thursday, December 04, 2008
Technical Article
Frantisek Svec
It has been just over 100 years since Russian botanist Mikhail Semionovich Tswett invented the separation technique that he named chromatography.
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Application Note
Bernard Sheldon, Frank Hoefler
Anion and cation determination in all types of water is one of the domains of ion chromatography (IC).
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Application Note
Glyn Russell, Phuong Truong, Lindsay Buck, Frankie Button
As a routine analytical tool in the laboratory, there are many important performance requirements such as precision, reproducibility, and sensitivity for an analytical HPLC to achieve satisfactory use...
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Application Note
Catrin Goebel
The detection of the abuse of synthetic insulins by doping laboratories is likely to become a routine requirement.
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Technical Article
Mahalakshmi Rudrabhatla, Jason S. Wood
The classical example of detrimental effects caused by bacteria, such as E. coli or Bacillus Anthracis, is through invasion of the host.
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Wednesday, November 01, 2006
Application Note
Christopher Pohl, Patrick McCarthy, Mark Tracy, Terry Sheehan
Immobilized metal affinity chromatography (IMAC) is a well-established protein separation technique experiencing expanded use based on new, high-performance analytical phases.
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Technical Article
Rita Bibi, Gloria R. Tovo, Ivan Pecorelli
Chemotherapeuticals as feed additives were widely used in the European Union to prevent and control many diseases in food-producing animals,
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Technical Article
Changyu Quang, Geralyn Kocan, Daniel Tang, Douglas M. Fast, Steven M. Michael
Quantitative bioanalysis is the most
important application area of liquid
chromatography coupled with atmospheric
pressure ionization (API) tandem
mass spectrometric detection (LC-API-MS-MS) in ...
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Wednesday, March 01, 2006
Technical Article
Michael Frank, Angelika Gratzfeld-Huesgen, Stefan Schuette
Analytical laboratories are increasingly
challenged to improve data quality and
increase sample throughput.
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