Centrifugal Filters (Filtration Tubes)
Ultrafiltration Units
A$110.00
Precision Molecular Weight Cut-Off Filtration for Protein and Biomolecule Processing
These centrifugal filters utilize regenerated cellulose (RC) ultrafiltration membranes with Molecular Weight Cut-Off (MWCO) ratings rather than traditional pore sizes, providing superior precision for biomolecule separation and concentration. Available in MWCO ratings of 3, 10, 30, 50, 100, and 300 kDa, these filters enable targeted retention of molecules based on molecular weight.
Key Specifications:
MWCO Range: 3 kDa to 300 kDa for selective molecular separation
Volume Options: 0.5mL, 2mL, 4mL, and 15mL capacities
Membrane Material: Low-binding regenerated cellulose with >90% recovery rate
Concentration Factor: Up to 80-fold concentration capability
pH Compatibility: Broad chemical compatibility pH 1-14
Selection Guide:
Choose an MWCO that is 2-3 times smaller than your target molecule's molecular weight for optimal results:
Filter MWCO | Target Molecule MW |
|---|---|
3 kDa | 6-30 kDa |
10 kDa | 30-100 kDa |
30 kDa | 100-200 kDa |
50 kDa | 200-500 kDa |
100 kDa | >500 kDa |
Applications:
Protein concentration and purification
DNA/RNA processing and cleanup
Desalting and buffer exchange
Removal of primers and molecular tags
Cell lysate and tissue culture extract purification
These units feature color-coded caps for easy MWCO identification, volume graduations for sample monitoring, and vertical membrane design for fast processing times. Compatible with both fixed-angle and swing-bucket centrifuge rotors.