m_thankey The Tommee Tippee Perfect Prep Machine will prepare a bottle in less than two minutes. It does all the hard work for you, so it's ideal for night-time feeds. Easy and accurate, the versatile design will accommodate most baby bottles. First it filters water, then an initial hot shot of water kills any bacteria present in the formula and helps it to dissolve. Just measure out the formula and the Perfect Prep Machine adjusts the water temperature to body temperature. Allows you to be confident that each bottle you make is the right dilution and consistency.