Fill the Bubbler Airlock with water and insert in drilled stopper or bung to vent gases during fermentation.
"Bubbler" style airlock makes a gratifying "bloop" noise during active fermentation. It is the preferred airlock for secondary fermentation, as it is possible to monitor the pressure inside the fermenter.
To use: Insert assembled airlock into the hole of the rubber stopper that fits your current jug or carboy. The airlock cap should always stay on top when in use; it has several small holes in it that allow gas to escape but prevent the water inside from quickly spilling out if tipped or jostled.
Does what it says it does. Music to my ears. Blurp, blurp, blurp.
Took away a star because my cap didn’t have any holes to vent out of. I used a thumb tack to put a few in and it works fine after that.
I use the bubbler airlock for secondary fermentation. It's easier than a 3 piece airlock to set up, albeit not as easy to clean.