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Thermo Scientific™

Dionex™ OnGuard™ II Ba Cartridges, 2.5mL

Related applications:

Industrial Chromatography

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.
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For reproducible, quantitative determinations in low-ionic-strength samples, activate these cartridges by adding NaCl or other sodium salt. Samples treated with NaCl should be passed through an On-Guard II Ag cartridge to remove the added chloride, then passed through an OnGuard II H cartridge or MetPac™ CC-1 chelating column to remove residual silver counter ions.

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
Performance Guaranteed
  • Ships with a Certificate of Analysis that verifies capacity, performance and cleanliness
Pretreat 12 Samples Simultaneously
  • Use the optional Dionex OnGuard Sample Prep Station and OnGuard Sample Pretreatment Cartridges