Filters down to .22 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.

California Proposition 65

Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.