Autofil 2 features the NEW High Flow Velocity 0.1µm, 0.2µm, and 0.45µm PES membranes. Perfect for filtering FBS and other viscous solutions. Our membrane is low protein binding and surfactant-free. Autofil 2 is available in 250mL, 500mL, and 1000mL complete units with the NEW EZlabpure media bottle or funnel only bottle-top filters. All units are sterile and manufactured from USP Class VI polystyrene in an ISO 13485 clean room, FDA regulated facility.Autofil 2 is compatible with the patented Autofil Pedestal and NEW Cradle Ring 2. These optional docking stations allow for hands free filtering and provide a stationary vacuum hose connection, allowing for efficient set-up and quick use while preventing spills and tissue culture hood contamination.