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Ion chromatography (IC) with conductivity detection has been used successfully to determine anionic and cationic substances as well as polar compounds such as amines and organic acids. However, in ... read more

The previous installment (Part 38, American Laboratory, May 2010) outlined the regression-diagnostic steps needed when replicates are not exact. read more

The products we stir, pump, spread, pour, and spray are usually thought of as liquids. Surprisingly, however, it can be demonstrated that they live a quiet double life as liquids when observed,but ... read more

Formaldehyde or formaldehyde-releasing preservatives are frequently used in cosmetic preparations such as shampoos and skin-care products for the prevention of microbial and fungal growth. Many ... read more

Surfaces, the two-dimensional outer boundary between the three-dimensional object and its environment,have many attributes and are perceived as the complex interplay of three factors: surrounding ... read more

Recent developments in spectrometer design have made the unique capabilities of X-ray photoelectron spectroscopy (XPS) accessible to scientists and engineers working on the latest devices for energy ... read more

While O’Farrell first described two-dimensional electrophoresis (2DE) of proteins 35 years ago, it remains one of the most widely used tools in proteomics today. read more

Whatever your application, when purchasing an XRF analyzer, it all comes down to application. Elemental composition (both the range of elements in your samples and their variability), sample size and ... read more