Dionex OmniPac PCX-500 Mixed-Mode Column 液相色谱柱
简要描述：
戴安公司生产的仪器主要有离子色谱仪、高效液相色谱仪、快速溶剂萃取仪和氨基酸直接分析仪。其中离子色谱仪凭借着雄厚的技术优势和方法已广泛地应用于各个领域，其市场占有率达80%。与离子色谱相关的文章有90%均出自戴安公司生产的离子色谱仪。
| 型号 | 美国戴安 P/N: 042195 |
|---|---|
OmniPac PCX-500 Mixed-Mode Column
The OmniPac? PCX-500 column is a macroporous, high-capacity, solvent-compatible column designed to separate cationic and neutral species in a single run. This column combines cation-exchange and polymeric reversed-phase retention mechanisms in a single column.
- Good for the simultaneous separation of neutral and cationic species
- Acid and base compatible, pH 0–14
- 100% solvent compatible
- Not as effective as the CS12A for inorganic cations
The multimode separation mechanism is achieved by coating a macroporous hydrophobic core for reversed-phase retention with a cation-exchange latex bead layer for cation-exchange retention. The macroporous structure provides an accessible hydrophobic core where reversed-phase retention occurs. The cation-exchange selectivity is provided by a cation-exchange MicroBead? layer that coats the hydrophobic core. Since the cation-exchange layer is identical to that of the OmniPac PCX-100, the two columns exhibit similar ion-exchange selectivity. As a result, the OmniPac PXC-100 can be used to develop the ion-exchange separation, and the method can then be transferred to the OmniPac PXC-500 for further refinement to include solvent for the reversed-phase separation. The OmniPac PCX-500 is 100% solvent compatible and should always be run with at least 1% organic solvent in the phase to maintain column life.
The OmniPac PCX-500 may be used for the separation of compounds such as adrenergics, alcohols, anilines, antidepressants, anti-inflammatory agents, plating bath brighteners, cephalosporins, stains and dyes, herbicides, nucleotides and nucleosides, peptides, sulfonamides, and water-soluble vitamins.
技术参数：
| OmniPac PCX-500 Mixed-Mode Column Specifications | |
|---|---|
| Dimensions | OmniPac PCX-500 Analytical Column: 4 × 250 mm OmniPac PCX-500 Guard Column: 4 × 50 mm |
| Maximum operating pressure | 4000 psi (27.9 MPa) |
| Recommended operating temperature | Ambient |
| Typical operating conditions | 1.0 mL/min with at least 1% organic solvent Recommended flow rate: 1.0 mL/min |
| phase compatibility | 100% compatible with common organic solvents. Recommended eluents: 1% solvent. Acid to maintain weak bases in the cationic form, salt (e.g., Na+ for cation exchange). |
| Resin composition | 8.5-μm-diameter ethylvinylbenzene/divinylbenzene macroporous substrate (55% cross-linked) agglomerated with 200-nm MicroBead sulfonic acid-functionalized latex (5% cross-linked). |
| Anion-exchange capacity | 120 μeq/column (4 × 250 mm analytical column) |
| Column construction | PEEK with 10-32 threaded ferrule-style end fittings. All components are nonmetallic. |
订购信息：
| Analytical Columns | |
|---|---|
| OmniPac PCX-500 Analytical Column (4 x 250 mm) | 042191 |
| Guard Columns | |
|---|---|
| OmniPac PCX-500 Guard Column (4 x 50 mm) | 042195 |