美國戴安Dionex OmniPac PAX-500 Multimode Column 液相色譜柱
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產品名稱: 美國戴安Dionex OmniPac PAX-500 Multimode Column 液相色譜柱
產品型號: OmniPac PAX-500
產品展商: 戴安Dionex
產品文檔: 無相關文檔
簡單介紹
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美國戴安Dionex OmniPac PAX-500 Multimode Column 液相色譜柱
的詳細介紹
OmniPac PAX-500 Multimode Column
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.
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Good for the simultaneous separation of neutral and anionic species
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Unique selectivity for polar and ionic organic analytes
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Effective for biological samples such as purines, pyrimidines, and vitamins
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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.
技術參數：
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OmniPac PAX-500 Multimode Column Specifications
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Dimensions
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OmniPac PAX-500 Analytical Column:
4 × 250 mm
OmniPac PAX-500 Guard Column:
4 × 50 mm
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Maximum operating pressure
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4000 psi (27.9 MPa)
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Recommended operating temperature
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Ambient
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Typical operating conditions
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1.0 mL/min with at least 1% organic solvent
Recommended flow rate: 1.0 mL/min
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Mobile phase compatibility
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100% compatible with common organic solvents.
Recommended eluents: solvent for reversed-phase, anion, such as Cl– or OH– for anion-exchange.
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Resin composition
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8.5-μm-diameter
ethylvinylbenzene/divinylbenzene macroporous substrate (55%
cross-linked) agglomerated with 60-nm MicroBead alkanolquaternary
amine-functionalized latex (4% cross-linked).
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Anion-exchange capacity
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Approximately 40 μeq/column (4 × 250 mm analytical column)
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Column construction
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PEEK with 10-32 threaded ferrule-style end fittings.
All components are nonmetallic.
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訂購信息：
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Analytical Columns
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OmniPac PAX-500 Analytical Column (4 x 250 mm)
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042152
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Guard Columns
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OmniPac PAX-500 Guard Column (4 x 50 mm)
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042153
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