Corning Sterile Bottle-Top Vacuum Filters

Use Corning® Sterile Bottle-Top Vacuum Filters to filter cell culture media, biological fluids, and other aqueous solutions. They are designed to work well with glass and polystyrene media bottles. Plus, these filters have the membrane material and pore size printed on them, and they are color coded by membrane type for easy product identification. Each includes a membrane filter, graduated clear polystyrene funnel, and polyethylene neck adapter with angle hose connected, which simplifies vacuum line attachment. Filters are provided individually packaged, Gamma sterilized, and certified non-pyrogenic.

Choose from Filter COS431118, featuring a 45mm neck diameter to fit wide mouth media bottles and polyethersulfone (PES) membrane, and Filter COS430512, featuring a 33mm neck diameter to fit narrow mouth media bottles and cellulose acetate (CA) membrane. PES membranes provide the fastest flow rates, the lowest protein binding, and low extractables, and are excellent for filtering cell culture media.

Key Features

  • Square filter support improves filtering performance
  • Color coded by membrane type for easy identification
  • Filters are designed for use on glass and polystyrene media bottles

Specifications for Corning® Sterile Bottle-Top Filters

COS431118 COS430512  COS430521 COS430513
Funnel Capacity: 500 mL
Neck Diameter: 45 mm 33 mm  33 mm
 45 mm
Membrane Material: Polyethersulfone Cellulose Acetate Cellulose Acetate
Cellulose Acetate
Membrane Pore Size: 0.22 µm 0.45 µm  0.22 µm
 0.22 µm
Membrane Dimensions: 63 mm x 63 mm
Membrane Area: 33.2 cm2
Color Code: Yellow Orange  Orange  Orange

Filter
Item No. Alt. Part No. Color-Coded Adapter Membrane Neck Size- mm Pore Size- µm Unit of Measure Your Cost Purchase
FILTE BOTTL 45MM 22UMPES 12CS
COS431118
EF8259B Yellow PES 45 0.22 Case of 12
$176.25/CS
Add to Cart This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you'd like us to keep stock in the future In Stock
FILTE BOTTL 45MM 22UM CA 12CS
COS430513
EF8252C Orange CA 45 0.22 Case of 12
$119.50/CS
Add to Cart This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you'd like us to keep stock in the future In Stock
FILTE BOTTL 33MM 45UM CA
COS430512
EF8251D Orange CA 33 0.45 Case of 12
$121.87/CS
Add to Cart This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you'd like us to keep stock in the future In Stock
FILTE BOTTL 33MM 22UM CA 12CS
COS430521
EF8251C Orange CA 33 0.22 Case of 12
$120.07/CS
Add to Cart This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you'd like us to keep stock in the future In Stock