Sintered polyethylene filters are widely used in medical practice. Filtration involves what is being filtered, either air or liquid. In oxygen concentrators, for example, air filters make oxygen clean and fresh, suppress noise. Liquid filters, such as dissolution filters, remove particulates from the feed stream.

What if we only need air filtration, but prevent aqueous liquid from passing through the filter? For instance, in surgical waste management, waste liquid must be introduced into containers, sealed, waiting for properly treated. Disposable suction liners equipped with such filters are used in nowadays hospitals.


These filters are often called shut-off valves. At Biocomma, they are part of the portfolio of our H2OStop® self-sealing filters.


H2OStop® self-sealing filters feature good air gas permeability before wetted and quick sealing once exposed to aqueous liquids, making them ideal shut-off valves for surgical waste management, blood sampling, injection therapy.


For more information, please visit H2OStop® self-sealing filters.

About Biocomma

Biocomma Limited, founded in 2006, is a leading manufacturer of filtration, sample preparation and life science products. As an ISO9001:2015 certified company, Biocomma owns one filtration facility, two cleanrooms and one research & development center, supplying more than 1,500 products. For the past eleven years, we have served over 4,000 customers and provided OEM and customization services for dozens of well-known brands around the world.


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.