Airlock 2-Chamber Bubbler for Home Brew (4 Pack)

These 2-chamber bubbler airlocks are designed to support a clean, controlled fermentation for home brew beer and wine. They allow carbon dioxide to vent from your fermenter while helping to reduce the risk of oxygen exposure and contamination, giving yeast the stable conditions it needs for a better result.

Made from durable moulded plastic, the double-chamber design provides a reliable liquid barrier once filled, helping to keep outside air from travelling back into the fermentation vessel. The simple shape is easy to fit, remove and rinse between brews, making it suitable for both first-time brewers and experienced home brewers.

Use them with common fermentation setups such as demijohns, carboys and fermenting buckets that accept an airlock through a suitable bung or grommet. They’re ideal for beer, wine, cider and other fermentations where you want clear visual bubbling as fermentation progresses.

To use, fill the airlock with clean water and fit it securely into your bung/grommet before fermentation starts. Keep the liquid level topped up during longer ferments and clean thoroughly after use, ready for the next batch.