Dionex™ OnGuard™ II Ba Cartridges

Remove high concentrations of sulfate from sample matrices Improve ion chromatography (IC) performance and facilitate low-level ion analysis. Thermo Scientific™ Dionex™ OnGuard™ II Ba Cartridges are an off-line sample preparation technique that uses a styrene-based, sulfonic acid resin in the barium form to eliminate these matrix interferences and improve performance of ion chromatography (IC). Use them singly or in series, or pretreat up to 12 samples in parallel using the optional Thermo Scientific™ Dionex™ OnGuard™ Sample Prep Station.

Solve Tough Application Problems

• Boost sensitivity, lower baselines, and get better separations
• Achieve reproducible trace-level determinations in concentrated matrices
• Increase the lifetime of your analytical columns
• Use for a wide range of matrices thanks to wide pH stability
• Supports applications with choice of 1cc and 2.5cc formats, as well as syringe barrel format for robotic processing (custom order)

Easy-to-Use, Leak-Free

• Leak-free, no-channeling cartridge
• Quick, secure Luer inlet connections

• Ships with a Certificate of Analysis that verifies capacity, performance and cleanliness

• Use the optional Dionex OnGuard Sample Prep Station and OnGuard Sample Pretreatment Cartridges