by SIELC
SIELC Technologies provides 4 types of different B-type columns with positively charged functional groups.
Primesep B2 is a weak basic column. It also has carboxilic acidic functional groups. At pH of the mobile phase below 5 the acidic groups are not ionized and B2 column surface becomes positively charged. This dual chemistry offers extended pH range from 0.5 to 7, suitable for the ammonium acetate and ammonium formate buffered mobile phases.
| Vendor | SIELC | Length | |
| Brand | Primesep B2 | Internal Diameter | |
| Modifification | Silica/SAX | Pore size | 100 |
| Mode | Anion-Exchange | pH stability from | 0.5 |
| Particle Size | pH stability to | 7.0 |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| SIELC | Primesep B4 | Anion-Exchange | Silica/SAX | 3.2 mm | 100 mm | 5.0 μm | 100 Å | On request |
| SIELC | Primesep B4 | Anion-Exchange | Silica/SAX | 4.6 mm | 150 mm | 5.0 μm | 100 Å | On request |
| Phenomenex | PhenoSphere SAX | Anion-Exchange | Silica/SAX | 3.2 mm | 150 mm | 5.0 μm | 80 Å | On request |
| WATERS | Spherisorb SAX | Anion-Exchange | Silica/SAX | 20.0 mm | 250 mm | 10.0 μm | 80 Å | On request |
| SIELC | Primesep B2 | Anion-Exchange | Silica/SAX | 0.25 mm | 250 mm | 5.0 μm | 100 Å | On request |
| SIELC | Primesep B2 | Anion-Exchange | Silica/SAX | 4.6 mm | 10 mm | 5.0 μm | 100 Å | On request |
| GL Sciences | Inertsil AX | Anion-Exchange | Silica/SAX | 0.7 mm | 150 mm | 5.0 μm | 100 Å | On request |
| Thermo Fisher Scientific | Hypesil GOLD | Anion-Exchange | Silica/SAX | 2.1 mm | 50 mm | 5.0 μm | 175 Å | On request |
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