| Diameter (Metric) | 22.7 mm |
|---|---|
| Filtration Area | 3 cm<sup>2</sup> |
| For Use With (Application) | Protein purification, protein concentration and desalting |
| Housing Material | Regenerated Cellulose (RC) |
| Includes | Two microcentrifuge tubes |
| Length (Metric) | 124 mm |
| Quantity | 24Pack |
| Type | Centrifugal Filters |
| Volume (Metric) | 4 mL |
| Disposable | Single-use |
| MWCO | 30 kDa |
| Material (Membrane) | High-recovery Ultracel-PL Regenerated Cellulose |
| Sterility | Non-sterile |
| Unit Size | Each |
Answer:The device uses a 30 kDa MWCO membrane.
Answer:The Ultra-4 format accepts up to 4 mL.
Answer:This package contains 24 centrifugal filters.
Amicon® Ultra-4 centrifugal filters are compact ultrafiltration devices for concentrating protein and macromolecular samples up to 4 mL. This configuration uses a 30 kDa regenerated-cellulose membrane and is supplied as 24 devices. The membrane area is approximately 3 cm², providing an efficient balance between processing speed and recovery for medium-volume laboratory samples. The device supports concentration, desalting, and buffer exchange by retaining molecules above the nominal cutoff while allowing salts and smaller solutes to pass into the filtrate. A dead-stop design helps prevent the retentate from being centrifuged completely dry and simplifies recovery of the concentrated sample. The 30 kDa cutoff is useful for many proteins, antibodies fragments, and macromolecular assemblies that require removal of lower-molecular-weight contaminants. Optimize spin conditions for sample viscosity, target concentration factor, and desired final volume.
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