The 50ml of water in the bottle will turn into steam when microwaved*. The steam reaches the temperature necessary to sterilise, killing virus and 99.9% of bacteria. The steam travels around the bottle and through the holes in the screw ring to reach the external surface of the teat and the internal surface of the hood.
*Based on microwaves from 700 to 1000 Watts.
PLEASE NOTE: It’s important that the silicone teat is not tightened on to base when self-sterilising in microwave to allow the steam to flow.
The silicone bottles come with a handy travel lid to stop any unwanted leaks on the go. Please ensure the travel lid is thoroughly washed and dried before use.
Remove travel lid when self-sterilising in a microwave.