Inventors:
Louis Bonhomme - Waltham MA, US
John Doyle - Kensington NH, US
Kurt Greenizen - Bradford MA, US
George Gagne - Dracut MA, US
Sean Devin - Dublin Pike, IE
Gerard Lombard - Ballyhooley, IE
Vincent Smith - Ballincollig, IE
Mark Kavonian - North Reading MA, US
Assignee:
EMD Millipore Corporation - Billerica MA
International Classification:
B01D 63/08
B01D 25/22
B01D 21/26
US Classification:
21032184, 2103231, 2103601, 210477, 422 72, 422534, 422533
Abstract:
Filtration device suited for concentration of liquid samples, particularly biomolecules, and a method of concentrating, desalting, purifying and/or fractionating liquid samples. In certain embodiments the device includes a housing having a sample reservoir, and two substantially vertically oriented and spaced apart membranes disposed in the housing. An underdrain is associated with each membrane such that fluid passing through each membrane flows through a respective underdrain into a filtrate collection chamber. The fluid that does not pass through the membrane is collected in the retentate collection chamber, and can be recovered such as by a reverse spinning step, achieving recoveries greater than about 90%. The substantially vertical orientation of the membranes increases the available membrane area by at least 2. 7 times the area available in a conventional filter device.
