Home Made Air Lock

Introduction: Home Made Air Lock

 How to make a simple air lock for home-brewing.

Step 1: What You Will Need

> Small clear container (film canister size)
> Ordinary drinking straw
> Sealant (I used blu-tack
> Tape
> Bottle (for alcohol)
> Suitable lid for bottle
> Drill
> Scissors

Step 2: Drilling

 First drill a single hole in the lid of your bottle so that the straw can fit through then drill two holes the same size in the lid of your canister.

Step 3: Construction

 Push the short end of the straw about 1cm through the bottle lid and seal around it with your sealant or blu-tack.
Push the other end of the straw through the canister lid so that when it is put on the canister it isn't touching the bottom otherwise it may block causing a build up of CO2 that would make your home brew go of like a shaken soft drink.
Finally fill the canister with water leaving some room at the top but ensuring that the end of the straw is covered.

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    7 years ago on Introduction

    what will you do with the second hole of blue cap ? thanks


    11 years ago on Introduction

    What is an air lock? I don't speak English, pardon.


    Reply 11 years ago on Introduction

     Hi when you are making home brew you need to allow the carbon dioxide gas produced by the yeast to escape but you also need to stop harmful airborne bacteria and mould spores from getting to the brew. An airlock allows the carbon dioxide to bubble out through the water but doesn't allow the air into the brew. Hope this helps feel free to ask for more clarification.