Nalgene Bottletop Filter Holder 500 ml DS0320-5033

- Autoclavable and reusable filter holder accepts 47 mm membrane filters and has three ports for venting (with or without syringe filters)
- Washable and environmentally friendly alternative to disposable filters; made of polysulfone material
- Capacity upper chamber: 500 ml; nominal filter area with sterilization filter support plate: 13.3 cm
- Fits 33 mm bottle thread neck; 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