Dionex™ OnGuard™ II P Cartridges

Remove the phenolic fraction of humic acids, tannic acids, lignins, anthocyanins, and azodyes from sample matrices. Thermo Scientific™ Dionex™ OnGuard™ II P Cartridges are an off-line sample preparation technique that uses polyvinylpyrrolidone (PVP) polymer with very high selectivity to eliminate these matrix interferences to improve IC performance and facilitate low-level ion analysis. Use Dionex OnGuard II P Cartridges singly or in series, or pretreat up to 12 samples in parallel using the optional Thermo Scientific Dionex OnGuard Sample Prep Station.

• Boost sensitivity, lower baselines, and get better separations by removing phenolics, metals, cations, anions, hydrophobic substances, and more
• 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 formats, as well as syringe barrel format for robotic processing (custom order)

• 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