Astronaut Ms Sullivan in the airlock. Suggest a better picture for an airlock!
These are designed to fit the most common sizes. They are an essential part of your home brew equipment!
They are essential pieces of homebrew kit and do need replacing fairly often.
So, we've given you a discount if you buy bulk! We are nice people!
Some old homebrew books recommend that you put steriliser in the airlock, we never bother, it gets blown out by the gas anyway!
Put a bit of water in the airlock and leave it alone, it should be obvious when it bubbles!
Don't confuse our bungs with those that footballers get, we'd never influence the outcome of the FA Cup. Unless Stockport County were in the final of course....