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42152
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OmniPac PAX-500

by Dionex

 

The OmniPac® PAX-500 column is a macroporous, low-capacity, solvent-compatible column designed to separate anionic and neutral species in a single run. This column combines both anion-exchange and polymeric reversed-phase retention mechanisms in a single column.

  • Good for the simultaneous separation of neutral and anionic species
  • Unique selectivity for polar and ionic organic analytes
  • Effective for biological samples such as purines, pyrimidines, and vitamins
  • Good for drugs and pharmaceuticals

The multimode separation mechanism of the OmniPac PAX-500 is achieved by coating a macroporous, hydrophobic core for reversed-phase retention, with an anion-exchange latex bead layer for anion-exchange retention. The macroporous structure provides an accessible hydrophobic core where reversed-phase retention occurs. The anion-exchange selectivity is provided by an anion-exchange MicroBead™ latex that coats the hydrophobic core. Since the anion-exchange layer is identical to that of the OmniPac PAX-100, the two columns exhibit similar ion-exchange selectivity. As a result, the OmniPac PAX-100 can be used to develop the ion-exchange separation and the method can then be transferred to the OmniPac PAX-500 for refinement to include the reversed-phase separation. The OmniPac PAX-500 column is 100% solvent compatible and should always be run with at least 1% organic solvent in the mobile phase to maintain column life.

The OmniPac PAX-500 may be used for the separation of compounds such as alcohols, alkanolamines, antihistamines, anti-inflammatory agents, aromatic acids, inorganic acids, peptides, purines and pyrimidines, sulfonamides, sulfonated anionic surfactants, and water-soluble vitamins.

Specification
Vendor Dionex Internal Diameter 4.0
Brand OmniPac PAX-500 Max Pressure 4000
Modifification Polymer/ Alkanolquaternary amine Operating Temperature Ambient
Mode Reversed-Phase+AX pH stability from 0.0
Length 250 pH stability to 14.0
Similar columns from other manufacturers to OmniPac PAX-500

Up to 10 unique Brand families from other Vendors with the same Mode and the same Modification.

How similarity is calculated
Eligible families receive a weighted score from Modification (25%), Product Usage (20%), Carbon Load (15%), Endcapping (10%), Pore Size (10%), Surface Area (8%), pH Stability (8%) and Particle Size (4%). The score uses data available in both families and requires at least three comparable criteria, at least 50% data coverage and a minimum 55% score. A relevant active sponsor may appear first and is always labelled Sponsored.
A similarity score does not guarantee identical selectivity or performance. Confirm suitability under the intended method conditions.
No other-Vendor Brand family with the same Mode and Modification meets the comparable-data and similarity thresholds.
Product Usage values
Anions Bio-molecules Ionic compounds Pharmaceutical molecules Vitamins
Application values
No Application values are assigned to this Product.
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