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This month's instalment of "GC Connections" discusses factors that can help determine which type of liquid injection technique is appropriate for specific samples, including having to use existing inlet systems that are on-hand in the laboratory with samples for which they might not be ideally suited. [ABSTRACT FROM AUTHOR]

The article presents information on new gas chromatography (GC) instruments and accessories exhibited at the 56th annual Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, held from February 27, 2005 to March 4, 2005, at the Orange County Convention Center in Orlando, Florida. In contrast to the impressively large PerkinElmer Model 154, this year's new GC developments centred again around miniaturized or micro-sized separation technologies. SLS MicroTechnology GmbH showed a new version of their GCM-5000 gas chromatography module enhanced with a carbon nanotube coated column that they claim will be capable of producing fixed-gas separations similar to molecular sieves or other carbonaceous column packings and coatings. C2V showed pre-launch samples of a micro gas chromatograph based on gas-phase microfluidics.