3 Piece Airlock – for Fermenters

The three piece airlocks are a great choice for monitoring and stopping contaminents entering your fermenter.
Simple set up, just fill with pre-boiled water, or sanitiser mixture, and insert into your pre drilled hole/bung on your fermenter. The airlock creates a closed fermentation from inward contaminents. It will allow CO2 to blow off but not let any O2 or bugs into your fermenter.