Article Archives

This real-world example of calibration diagnostics involves the ion-chromatographic behavior of phosphoric acid; phosphate is the actual analyte form that is measured by the instrument. read more

In the development of many LC-MS methods, interferences are commonplace. In an environment in which data must stand up to rigorous scrutiny, such as in the pharmaceutical industry, selectivity of ... read more

Protein homogeneity is an important issue in many fields of research, be it the characterization of newly isolated molecules, the identification of crystallizable samples, or the preparation of ... read more

Perchlorate is both a naturally occurring chemical and a man-made inorganic ion. read more

Since the introduction of ion chromatography (IC) in 1975, Dionex Corp. (Sunnyvale, CA) has continued to improve the performance of IC systems while developing new capabilities for the determination ... read more

Size exclusion chromatography (SEC) and dynamic light scattering (DLS) are common technologies in protein laboratories. read more

Historically, the life sciences have been qualitative in nature, seeking to identify but seldom understand quantitatively. read more

As a blood-thinning drug, heparin and its derivative, low-molecular-weight heparin (LMWH), have been widely used for decades during surgery and kidney dialysis. read more

Many wonder if the time has come to merge ion chromatography (IC) with HPLC. read more

Boilers used in power stations hold ultrapure water, and the purity of that water must be determined by highly sensitive techniques. read more