Filter, Disc, Gelman, 47mm, 0.45um, Grid, Sterilized, GN GH Polypro (GHP) Membrane Disc Filters, Pall® Life Sciences Manufacturer-+ Price-+ Buy Now: 28143-288-PK DISC GH POLYPRO .45UM PK100 : $361.88: 28140-037-PK FILTER DISC GHP MEMB 47MM 0.2UM PK100 : $361.88: 28143-014-PK