All News

This article describes a method development approach that uses different packing materials and mobile-phase pH levels to optimize the chromatographic separation of degradation products from active ingredients.

John Hinshaw examines the principal safety issues surrounding the handling and use of compressed gas cylinders.

John Dolan focuses on several aspects of column temperature, which can affect retention, selectivity, peak shape, and column pressure.

The authors suggest ways to avoid phase collapse and regenerate collapsed phases.

John Dolan discusses the effects of peak tailing on resolution.

The second of a two-part series dealing with the lives and activities of important chromatographers who were active during the early growth and expansion of GC.

The author reports results from a systematic study of the effect of water injections on column performance with a number of common GC stationary phases.

John Hinshaw presents a report about the new GC instruments and accessories exhibited at the 53rd Pittsburgh Conference.

The guest authors review the commonly used sample preparation procedures for genomic nucleic acid purification and introduce the automation choices for high-throughput genomic sample preparation.

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Guest authors discuss equipment qualification for good laboratory and manufacturing practices compliance.

The authors describe the characterization of polymers and additives using a novel heart-cut evolved gas analysis GC–MS method.

John Hinshaw discusses using multilevel calibration for quantitative results computations.

The author describes using HPLC with chemiluminescence nitrogen-specific detection and aperometric detection to determine organic impurities in a tedisamil dihydrochloride drug substance.

John Dolan focuses on stability-indicating assays for pharmaceutical products.

Second of a two-part series in which Ron Majors examines the trends in column introductions at Pittcon 2002.

John Hinshaw discusses computer-controlled pneumatics systems, including their advantages and disadvantages.