EAN: 5010415237224Keep your Prep Machine in top working order with the Tommee Tippee Closer to Nature Perfect Prep Machine Filter. Filter every drop of water to remove impurities, and ensure that your little one consumes the cleanest water. This filter is designed for use with the Tommee Tippee Closer To Nature Perfect Prep Machine, providing the extra peace of mind that comes with knowing your baby's bottle will be perfect every time. Replacement Filters are designed to remove impurities in your water and each filter is estimated to last up to 3 months based on consumer preparing 6 x 260ml bottles per day. A warning light on your machine will indicate when your filter is coming to the end of its life and it will then flash when the filter needs replacement.