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Description
POROS™ XQ Strong Anion Exchange Resin is a next-generation, high-capacity, high-resolution, salt-tolerant resin that that enables >140 mg/mL dynamic binding capacity in the presence of up to 6.6 mS/cm NaCl, while delivering exceptional separation performance. A major improvement to the performance of traditional anion exchangers, POROS XQ resin sets the standard for strong anion exchange chromatography in both bind & elute or flow-through modes of operation.
- High dynamic binding capacity leading to reduced column size, smaller footprint, decreased water and buffer usage, and reduced cycling
- High resolution supporting improved product yield and purity, ultimately improving the cost of goods for the molecule being produced
- Robust salt tolerance allowing enhanced process design flexibility and streamlining of process flow
- Low operating back pressure and linear pressure versus flow responses driving flexible scalability
- Rigid polymeric bead with covalent surface chemistry for easier handling and packing, and superior physical and chemical stability enabling a more robust downstream purification process
Dynamic binding capacity
POROS XQ resin has a high binding capacity of more than 140 mg/mL at 5% breakthrough, over a broad range of process conditions, with superior binding capacity across a broad range of pH and salt conditions. Higher dynamic binding capacity was achieved by optimizing the base bead pore structure and surface chemistry.
High resolution
Using an optimized 50 µm particle size, POROS XQ resin maintains the superior resolving capacity of the POROS resins, overcoming the challenging impurity levels associated with high titer processes. Resolution remains consistent across a wide range of operating linear flow rates.
Robust salt tolerance
POROS XQ resin has high and consistent protein capacity across a broad range of salt concentrations up to 140 mg/mL at 50 mM NaCl (6.6 mS/cm conductivity). The ability to load columns under higher conductivity reduces or helps eliminate the dilution of column feed streams or the removal of unit operations, such as tangential flow filtration.
Specifications
Specifications
| Type | XQ Strong Anion Exchange Resin |
| Standard Components | Quaternized Polyethyleneimine |
| For Use With (Application) | Strong Anion Exchange Chromatography |
| Quantity | 50 mL |
| Volume (Metric) | 50 mL |
| Content And Storage | Store in refrigerator (2–8°C). |
| Product Line | POROS |
| Format | Poros Bead |
| Stationary Phase | Quaternized Polyethyleneimine |
| Purification Target | Protein |
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Frequently Asked Questions (FAQs)
All of the pre-packed POROS columns, regardless of column size or resin, have the same 10-32 female fittings on the column. Columns are compatible with Waters and Agilent HPLC systems. You will need 1/16 inch male fittings for the HPLC to attach the column.
All of the pre-packed columns, regardless column size or resin, have the same 10-32 female fittings on the column. They are all compatible with the AKTA instrument platform, however due to the column volume of the 2.1 mmD x 30 mmL columns (0.1 mL), these will not perform well in AKTA or Avant purification systems due to the relative size of the hold- up volume in these systems. The smallest column (PEEK or SS) that could feasibly be used in these systems is the 4.6mmD x 50mmL (0.8 mL) format.
The physical stability of POROS resins is high. Customers have agitated, with overhead mixing and or bottom gassing for long periods of time (5-10 hours) and have performed hundreds of diaphragm pump passes during stall packs. Keep in mind that agitation with any device that creates grinding and sheer, such as with a magnetic stir bar, is not recommended for any type of resin.
POROS resins rehydrate quite well. Here is the procedure that we recommend:
1. Flow 5% ethanol over the column at ?350 cm/hour for 3 CVs, followed by water or 0.1 M sodium chloride at 300 cm/hour for 3 CVs.
2. If baseline noise is still present, flow 20% ethanol over the column at 300 cm/hour for 3 CVs, followed by water or 0.1 M sodium chloride at 300 cm/hour for 3 CVs.
3. If you have established column qualification tests and specifications, perform the tests after rewetting.
In general POROS resins have behaved better for large biomolecules such as viral particles, fusion proteins, and globular proteins, where shape (not size) matters due to its unique pore structure and large pore structure as compared to traditional resins. As the target molecule size increases, capacities obtained will decrease. The large pore structure of POROS resins, which allows for convective flow (and therefore enhanced diffusion) is especially well suited for the purification of large biomolecules. POROS resins offer the best blend of high capacity (associated with chromatography beads) and improved chromatography efficiency (typically associated with monoliths or membranes). The average pore size for POROS resins is 1,000-3,600 Angstrom (100-360 nm) depending on the base bead/chemistry being utilized. For example, the molecular weight of IgG is 150 kDa and the molecular radius is 55 Angstrom. The molecular weight of IgM is ~900 kDa (pentamer), and the molecular radius is 120 Angstrom. So both of these biomolecules can interact with the pore structure associated with POROS materials.
For Research Use Only. Not for use in diagnostic procedures.
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