Increase Laboratory Efficiency with Ready-To-Use Disposable Filter Funnels-Each lot is certified for microbiological analysis to provide added assurance of reliable results.-Unique squeeze separation of cylinder from base allows easy access to membrane.-Individually bagged, disposable filter units prevent cross-contamination of samples.-The 100 mL funnels are marked in 10 mL incrementsand the 300 mL funnel is marked in 50 mL increments.-Disposable design eliminates the cleaning and sterilization required with reusable funnels.-Ready to use, pre-assembled and gamma-irradiated to eliminate the potential for toxic extractables associated with EtO sterilization.-Variety of options. Choose from GN-6 Metricel membrane in 0.45 μm pore size, Supor membrane with 0.2 or 0.45 μm pore size, or Metricel Black membrane with 0.45 or 0.8 μm pore size.-This product is not approved for use in medical, clinical, surgical or other patient applications.