The Perfect Prep makes a fresh bottle at the right serving temperature in less than two minutes. An in-built filter system removes impurities that are present in water, an initial hot shot of water kills any bacteria that may be present in the formula powder and helps to dissolve the powder easily. The remaining balance of water is then added to provide an accurate and consistent dilution and a feed that is ready to serve at body temperature (like breast milk). It works with any brand of powdered formula milk, and has an adjustable base for different bottle shapes and sizes. Measure out the formula, select the feed size and it does everything else.