The preferred bubbler by many homebrewers, the S-Lock Double Bubble Airlock allows the CO2 produced during fermentation out while keeping oxygen and other baddies from getting in. Popularly used because it allows for monitoring the pressure in a carboy.
*Usage: Fill to the line with boiled water or sanitizer and connect to your fermenter of choice.
- High Quality Plastic
- Single Piece (excluding cap)
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