January 2010, Sunnyvale, CA—Dionex is pleased to announce the release of the InGuard™ line of multiuse in-line sample preparation cartridges for ion chromatography. These cartridges are packed with a range of resins that can automatically remove matrix interferences such as anions, cations including transition metals, and hydrophobic contaminants including lipids. Pretreatment helps extend column life and improves separations. Reproducible ppm-level determinations are possible even in samples with concentrated matrices. Cartridges can be used multiple times, singly or in series, and in some cases can be regenerated (depending on the samples being treated).

InGuard cartridges are plumbed directly after the injection loop and before the concentrator column, thus making sample pretreatment automatic and saving the time and labor of off-line sample preparation. Each cartridge can be used multiple times before requiring regeneration or replacement. Standard 10-32 fittings make installation simple and secure. Cartridges are available in silver (Ag) form for the removal of halides, hydronium (H) form for the removal of polyvalent cations and neutralization of high pH samples, sodium (Na) form for the removal of transition metals and alkaline earth metals, hydrophilic reversed phase (HRP) form for the removal of organic material, and a combined Na/HRP form.

Dionex (NASDAQ:DNEX) is a global leader in the manufacturing and marketing of liquid chromatography and sample preparation
systems, consumables, and software for chemical analysis. The company’s systems are used worldwide in environmental analysis and by the life sciences, chemical, petrochemical, food and beverage, power generation, and electronics industries. Our expertise in applications and instrumentation helps analytical scientists to evaluate and develop pharmaceuticals, establish environmental
regulations, and produce better industrial products.

InGuard is a trademark of Dionex Corporation.