Airlock- S type
Airlock, twin bubbler, blow off. Different names one purpose. Vent off CO2 and prevent oxidation. Easy to attach in any lid. Just drill a hole and seal it with glue or rubber cork.
Add some water and stick this on top of your fermentor vessel and wait for the magic to happen. This time tested traditional airlock allows the CO2 produced to get released without outside air contaminating your brew. It prevents oxidation, acetic acid/vinegar creation and preserves the aromas of your homemade beverages and anaerobic ferments.
The airlock is made of plastic and fits any 9mm hole/aperture. Please use an appropriate sized cork/grommet (the black ring in the picture to be purchased separately) to attach to your fermenter. Read the article on how to prevent oxidation of your homebrew
Adding some spirit or food-grade disinfectant in the airlock helps keep bugs and bacteria away. If using for secondary, please check the water-level in the fermentation every 2 weeks to prevent it drying out. Alternatively, you can also use 3 piece airlock.
A couple of points to remember:
- If the temperature variation is too high, airlock might end up sucking air instead of letting it go.
- Properly check the leakage in your drilled hole/bung on your fermenter to prevent leakage.
- Freezer/fridge leads to accelerated moisture loss. So check the moisture level frequently.
- Adding some salt/alcohol will prevent the liquid in airlock from freezing.