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 |
|---|---|---|---|---|---|---|---|---|
| GL Sciences | Inertsil AX | Anion-Exchange | Silica/SAX | 1.5 mm | 250 mm | 5.0 μm | 100 Å | On request |
| SIELC | Primesep B4 | Anion-Exchange | Silica/SAX | 0.25 mm | 250 mm | 5.0 μm | 100 Å | On request |
| SIELC | Primesep B2 | Anion-Exchange | Silica/SAX | 2.1 mm | 25 mm | 5.0 μm | 100 Å | On request |
| WATERS | Spherisorb SAX | Anion-Exchange | Silica/SAX | 10.0 mm | 250 mm | 5.0 μm | 80 Å | On request |
| Agilent Technologies | ZORBAX SAX | Anion-Exchange | Silica/SAX | 4.0 mm | 250 mm | 5.0 μm | 70 Å | On request |
| SIELC | Primesep B | Anion-Exchange | Silica/SAX | 3.2 mm | 25 mm | 10.0 μm | 100 Å | On request |
| SIELC | Primesep B2 | Anion-Exchange | Silica/SAX | 1.0 mm | 250 mm | 5.0 μm | 100 Å | On request |
| SIELC | Primesep B2 | Anion-Exchange | Silica/SAX | 3.2 mm | 25 mm | 10.0 μm | 100 Å | On request |
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