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Molecular Weight Determination of Unfractionated Heparin
February 1st 2014Heparin is a polydisperse, heterogeneous polysaccharide derived from animal tissue. Heparin has been used as an anticoagulant for over 60 years and one of the fundamental parameters for characterizing unfractionated heparin (UFH) is its molecular weight (MW) and MW distribution.
Hexavalent Chromium Determination Hamilton PRP-X100 Anion Exchange HPLC Column
February 1st 2014Chromium (Cr) is a metal with an interesting relationship to the environment. Whereas trivalent chromium (Cr(III)) is an essential nutrient, hexavalent chromium (Cr(VI)) is a poison to humans and aquatic life and poses serious environmental and ecological threats.
The Automated Extraction of Aqueous Samples by Method EPA 8270D Using the TurboTrace ABN SPE System
February 1st 2014EPA 8270D calls for the extraction for analysis of semi-volatile analytes in various matrices. Target analytes mentioned in the method cover a wide range of compound classes resulting in reporting lists that often approach 100 compounds.
BIOshell Fused-Core Columns for Ultra Efficient RPLC of Proteins and Peptides
December 1st 2013Columns packed with fully porous particles have long been considered "normal science" for HPLC practitioners. Since 2006, Fused-Core? or core-shell columns have caused a paradigm shift in the minds of liquid chromatographers who analyze small molecules (1).