Whatman VectaSpin 20 centrifuge filters are ideal for the quick and easy preparation of a wide range of laboratory samples by centrifugation. Quick and easy-to-use. 20 mL sample capacity is ideal for large volume samples. Screw top cap for easy sample storage. Produced from pigment free polypropylene to eliminate sample contamination. Applications include: Easy particle removal from large volume samples, Environmental sample filtration, Sample preparation and collection, Ligand binding studies, Buffer exchange.