SorbaSep™ FPLC Desalting Columns
(Cytiva Compatible)
For Desalting Using FPLC Systems – Including Cytiva AKTATM, Bio-Rad NGCTM, and Knauer AZURATM
Cytiva-compatible SorbaSep desalting columns give you a reliable way to purify biomolecules. They remove small-molecule contaminants, support buffer exchange, and perform efficient desalting.
In addition, these columns work seamlessly with all FPLC and liquid chromatography systems. Therefore, you can integrate them directly into your existing setup without adjustments. As a result, SorbaSep columns provide a simple, rapid, and reproducible process that ensures your samples are ready for downstream applications.

SorbSep FPLC Column Features:
- Preloaded with SorbaDex-25 Superfine, a beaded composite size-exclusion matrix that delivers high flow rates, strong resolution, and excellent chemical stability.
- Fractionates globular proteins between 1 and 5 kD; fully aqueous-compatible with a broad pH range of 2–13.
- 5 mL column bed volume works with sample sizes from 0.1 to 1.5 mL, allowing complete removal of contaminants.
- Connect multiple columns in series to process larger sample volumes efficiently.
- Cost-effective alternative to HiTrap™, Bio-Scale™ P6, Zeba™ Desalting, and similar desalting products—without compromising quality or performance.

| Catalog No. | Description | Price (USD) |
|---|---|---|
| 803028-5 | SorbaSep FPLC Desalting Columns, with Sorbadex S-25 Superfine for buffer exchange and/or desalting using a syringe, a pump, or a chromatography system. 5.0 ml, 5 columns | |
| 803028-100 | SorbaSep FPLC Desalting Columns, with Sorbadex S-25 Superfine for buffer exchange and/or desalting using a syringe, a pump, or a chromatography system. 5.0 ml, 100 columns |
| Specifications | |
|---|---|
| Column Bed Volume | 5 ml |
| Size of Eluted Proteins | > 5 kD |
| System Compatibility | - Automated liquid chromatography systems (MPLC, FPLC™, ÄKTA™,etc.) - Peristaltic Pump - Syringe |
| Column Dimensions | 1.6 cm inner diameter x 2.5 cm height |
| Column Body Material | Polypropylene |
| Column Ports | Inlet 10–32 (1/16”) female Outlet 10–32 (1/16”) male |
| Support | Sorbadex™-25 Superfine |
| Bead size | 40–110 μm (hydrated) |
| Maximum Back Pressure | 3 bar (0.3 MPa) |
| Recommended Flow Rate | 1 to 5 ml/min |
| Maximum Recommended Flow Rate | 10 ml/min |
| Storage Temperature | ambient |
| Storage Solution | 20 % (v/v) ethanol |
SorbaSep™ FPLC Desalting Columns
Optimize your purification and chromatography with Sorbtech’s precision engineered SorbaSep™ FPLC columns. Each allows for easy packing, reproducibility, reliability, and scalability to increase productivity in your lab. Use SorbaSep™ FPLC columns to desalt, remove small molecules, and buffer exchange in standalone or automated HPLC systems—and for separating larger biomolecules from unwanted smaller molecules. Simple, rapid, and reproducible separation using a syringe, pump, or liquid chromatography system.
The fractionation range for globular proteins is between 1 and 5 kD. The size exclusion cut-off is approximately 5 kD, which ensures efficient separation of proteins/peptides/biomolecules larger than 5 kD from lower molecular weight molecules of less than 1 kD. SorbaSep™ desalting FPLC columns contain SorbaDex™-25 Superfine, a beaded composite size exclusion matrix. It exhibits high flow rates, excellent resolution, and chemical stability. Buffer and pH effects on resolution are minimal.

