Patent ID: 9546936
Date: 2017-01-17
CPC Classifications: B01D,B01J,C12N,C12Q,G01N

Claim:
1. A method for processing biological material for flow cytometry evaluation for virus particles, the method comprising: centrifuging a mixture comprising biological material for evaluation and purification particles to prepare a centrifuged composition including a more-dense phase concentrated in the purification particles and a less-dense supernatant, wherein the biological material comprises larger-size components and smaller-size components and the purification particles comprise: filtering a liquid-containing composition comprising at least a portion of the supernatant comprising at least a portion of the larger-size components, wherein retentate of the filtering includes at least a portion of the larger-size components from the liquid-containing composition and the filtering comprises filtration at a separation size to pass at least a portion of particles of virus size in the filtrate of the filtering.