"Efficient Removal of Viruses by a Novel Polyvinylidene Fluoride Membrane Filter."

According to the author's abstract of an article published in Journal of Virological Methods, "Virus removal by a novel filter (Ultipor VF DV50), comprising three layers of PVDF membrane, has been evaluated by infectivity studies using a range of viruses and conditions. The filter was able to remove at least 6 log of various viruses, i.e. Sindbis and Semliki Forest (40-70 nm), herpes simplex (120-200 nm), and vaccinia (200x350 nm), from cell-culture medium or phosphate buffered saline pH 6.8 containing 0.5% albumin. However, the removal of polio virus (25-30 nm) under these conditions was only limited, i.e. about 1 log. This filter is thus effective for removing viruses of about 50 nm...

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