RT Journal Article SR Electronic T1 Nomenclature Standardization for ‘Large Pore Size’ Virus-Retentive Filters JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 341 OP 345 VO 59 IS 6 A1 Kurt Brorson A1 Gail Sofer A1 Hazel Aranha YR 2005 UL http://journal.pda.org/content/59/6/341.abstract AB