GraviPur™50 Desalting Column with G-25 Medium Size Exclusion Resin for cleanup of 50 mL sample
Catalog NO.
Desalting Columns prepacked with G-25 Medium size-exclusion chromatography dextran resin for rapid cleanup of 50 mL samples. Ready for gravity, vacuum, pump applications ... Read more
Description
GraviPur™ Desalting Columns are prepacked with PROTEINDEX™ SEC G-25 Cross-linked Dextran Resin, a molecular-weight–based selection resin designed for rapid and efficient removal of small molecules. With an effective cutoff of approximately Mr 5,000, these columns enable biomolecules larger than the exclusion limit—such as proteins, peptides, nucleic acids, and other macromolecules—to be cleanly separated from salts, detergents, and other low–molecular-weight contaminants.
The column body is made of bio-compatible polypropylene (PP), and the frits are hydrophilic, enabling fast flow through driven by gravity. The integrated Luer-lock outlet provides secure, direct connection to female Luer ports on standard vacuum manifolds. A stopcock was provided with each column for better flow control during operation.
With high sample-loading capacity and ready-to-use design, GraviPur™ Desalting Columns deliver a cost-effective, reliable, and easy-to-integrate solution for buffer exchange, desalting, and sample cleanup, ideal for routine laboratory applications or seamless incorporation into existing purification systems.
Product Highlights
- Economical, ready-to-use format for routine desalting and buffer exchange
- Gentle, reliable separation of macromolecules from lower–molecular weight impurities
- Supports larger sample volumes for greater workflow flexibility
- Suitable for gravity-flow and vacuum-assisted operation

Product Details
| Product package size | 2 columns |
| Medium | ProteIndex™ SEC G-25 Medium Cross-Linked Dextran |
| Column bed volume |
166 mL |
| Maximum loading volume | 50 mL |
| Desalination efficiency | >90% |
| Exclusion limit | Mr 5000 |
| Gravity flow rate range | 10 – 20 mL/min |
| Maximum pressure | 0.1 MPa (1 bar) |
| pH stability range | 2 – 13 |
| Storage temperature |
2 – 8°C |
| Storage buffer |
0.1% ProClin 300 as preservative |
| Column material | polypropylene |
| Frit | Polyethylene |
Product is shipped at ambient temperature. Upon receipt store at 2 - 8°C. Do not Freeze.
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Marvelgent Biosciences Inc.
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