S-Bend Airlock - is an essential for your home brew setup.

A bubbler style airlock - it goes on top of your fermenter, allowing CO2 to escape and preventing oxygen and other nasties from entering your brew. 

Attach it to the hole in the top of your fermenter lid via an airlock grommet. 

Half fill it with water (or sanitiser), this creates a one way valve, then wait for the magic bubbling sound when fermentation begins. 

The S shape design lets you easily monitor the fermentation process, ‘cause you can see the bubbles rising through the airlock. 

Not just for beer, it can be used in a range of fermenting vessels, perfectly fitting into bored bungs for use in demijohns and other vessels. 

If you are making beer, wine, cider or spirits at home - you’ll need one of these.