Whatman 6900-2504 PVDF GD/X 25 Sterile Syringe Filter, 25mm, 0.45 Micron (Pack of 50)
The Whatman GD/X sterile syringe filter is the ideal choice for the preparation of hard-to-filter samples. Constructed of a pigment-free polypropylene housing with a prefiltration stack of Whatman GMF 150 (graded density) and GF/F glass microfiber media, this filter eliminates sample contamination and allows you to filter even the most difficult samples with less hand pressure. GD/X syringe filters can process three to seven times more sample volume than standard syringe filters.  Membrane:  PVDF.  Retention:  0.45µm.  Filtration Area:  1.3 sq cm.  Diameter:  13mm.  Inlet:  Female Luer Lok.  Outlet:  Male Slip Luer.  50/Pack.  Whatman #:  6900-2504.