Use as a microbiological air filter for aeration systems or keg hand pumps.

Filters down to .023 micron with 99.99% efficiency. Use with 3/8" ID tubing (1/4" ID will also work). Can be used as a microbiological air filter for aeration systems, or keg hand pumps. This filter can also make sterile water for yeast starters, rehydrating dry yeast, or topping up.