This clever piece of kit allows you to wash your bottles with steriliser.
Simply fill the chamber with a sterilised solution. Squirt it into the cleaned bottle by pushing it down on the spout. Place the bottle onto a bottling tree.
When all the botttles have been sterilised, fill the chamber with water (without a strerilising solution) and repeat. This will remove any tatse of sterilising solution. What could be easier?