Nalgene DS0320 2545 Polysulfone Reusable Bottletop Review

Capacity upper chamber: 250ml; neck diameter: 45mm; nominal filter area with sterilization filter support plate: 13.3cm. Material: polysulfone (PSF) bottletop filter holder with a silicone O-ring and a polypropylene vacuum adapter. Accepts 47mm membrane filters; deep threads screw onto bottle for convenient filling and vacuum filtration without holding filter to bottle. Removable sterilization membrane support plate is designed to provide maximum flow rate and throughput. Vacuum port on lower half of assembly; molded-in graduations; polypropylene tubing adapter can be stuffed with cotton for sterile venting during autoclaving.