If, like me, you've left a couple of demijohns and airlocks without cleaning them and there are some ominous looking black mould in the U bit of said airlocks then a nylon cable tie is great for shoving in to poke bits out and to mix the sterilising powder around in there.
Should have gone with the other type of airlock from Wilko's.
Should have gone with the other type of airlock from Wilko's.
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