LCGC Europe-04-01-2008

The 32nd International Symposium on Capillary Chromatography and the 5th GCXGC Symposium will be held at the Palazzo dei Congressi, Riva del Garda, Italy, in May.

They may come with a hefty price tag but these earphones reportedly take sound onto a new level. Denon's latest AH-C751 earphones cost ?150 but the "Metal Bullet" design uses ultra-rigid machined aluminum that does not resonate, unlike plastic housings used in less expensive products. Denon's "Acoustic Optimiser" balances the sound pressure before and behind the diaphragm to reportedly give greater dynamics and fast transient response. All the contacts are made of gold, as is the 3.5 mm plug. They come with three pairs of ear adapters, a 0.8 m extension cord and rigid travel case.

CCC is an excellent alternative to avoid the problems associated with solid-phase adsorbents, which include irreversible adsorption of sample and the need to replace expensive columns. As a result, CCC is gaining popularity as a purification tool.

Computerized pneumatic control adds a very capable multipurpose tool to the chromatographer's tool belt.

Sample diluent ionic strength, pH, organic solvent composition and viscosity can all have a significant impact on the performance of CE separation. It is, therefore, essential that the choice of solvent is optimized during method development. The optimized diluent should be fully specified in the method and used consistently in method validation and all subsequent applications of the method.

Reducing or, if possible, eliminating the use of organic solvents is an important goal in terms of environmental conservation, human health and the economy.

If the problem source cannot be found or if found, cannot be corrected, an adjustment in flow-rate is justified.