VWR Centrifugal Filter Tube PES 30 kDa, 500 µl fits 1.5 ml Rotor

The VWR 82031-352 Filter Tube is a specialized centrifugal filtration device designed for efficient and reliable concentration and purification of biological samples. This filter tube is equipped with a high-flux polyethersulfone (PES) membrane, a material known for its low protein binding characteristics and consistent performance.

A key feature of this device is its 30 kDa (kilodalton) molecular weight cutoff (MWCO). This MWCO means the filter membrane is designed to retain molecules with a molecular weight greater than 30 kDa, while allowing smaller molecules, salts, and solvents to pass through. This makes it an ideal tool for concentrating proteins, peptides, and nucleic acids, as well as for applications such as desalting, buffer exchange, and the removal of unincorporated labels from reaction mixtures. The filter is engineered to process a maximum sample volume of 500 µl and fits rotors that accept 1.5 ml tubes, making it compatible with a wide range of standard microcentrifuges.

The filter housing is constructed from polypropylene (PP) and features a sealed membrane to prevent contamination. With a maximum centrifugal force of 14,000 x g, it provides fast processing times and excellent sample recovery, typically greater than 90%. This VWR centrifugal filter tube is a valuable and versatile tool for molecular biology and biochemistry laboratories needing to prepare samples for downstream analysis with high recovery and efficiency.