Since there is no evidence that bottled water is safer than municipal water sources, the AAP says that while parents can use bottled water to mix formula, the water still needs to be boiled first. • If you do not have access to boiling water, you may wish to use sterile liquid infant formula. Tap water, well water and bottled water are NOT sterile and must be boiled before use. • Alternatively, you can prepare feeds using fresh, safe water at room temperature and consume immediately. You should always boil water before using it to make formula milk. Using formula when you’re out and about. You can also use distilled water that has already been purified or ready-to-use formulas, which do not need mixing with water. This whole 'add formula to boiling water' is a brand new load of bollocks. Ask your baby's doctor if you need to use cooled, boiled water for mixing and if you need to boil (sterilize) bottles, nipples and rings before use. • Throw away any left-over feed after two hours. To make liquid concentrate formula, follow these steps: Boil water in a kettle or in a pot on the stove for 2 minutes If you use a kettle, make sure it does not shut-off by itself as soon as the water starts to boil Let the boiled water cool to room temperature before mixing it with the formula Bacteria can grow at lower temperatures. As long as you are meticulous in washing up the bottles and sterilising them there should be no probs. If you are concerned or uncertain about the safety of the tap water: You may use bottled water or bring cold tap water to a rolling boil for 1 minute (no longer), then cool the water to room temperature for no more than 30 minutes before it is used. Once the formula has been prepared, drinking it ASAP; That doesn’t mean you can’t prepare a batch of formula in advance, but you do need to refrigerate it (and it would be safer to make a fresh bottle every time). Water used for mixing infant formula must be from a safe water source, as defined by your state or local health department. If you need to prepare in advance (for example if you are going out), then store the cooled, boiled water sealed in the bottles and take them with you in baby's bag. STERILIZATION OF WATER. Buy the formula pots and you will be fine. • Feeds prepared with water cooler than 70ºC should not be stored for use later. You can also use ‘ready to drink’ formula if preparing formula in advance isn’t an option for you or if you’re travelling. One of the most common minerals found in purified water is magnesium which in the event of constipation can act as an osmotic laxative by relaxing your child’s bowels and pulling water into his or her intestines. Boiling Water Yes. Even though tins and packets of milk powder are sealed, they can still contain bacteria. Preparing formula with water hotter than 70 ⁰C (this kills the bugs), and then cooling it by standing the bottle in cold water. l Wash your hands, surfaces and utensils. Cool boiled water, but water should still be hot when mixing in standard powdered formula, in order to kill bacteria. l Add 1 unpacked level scoop (8.7 g) to each 2 fl oz of water. Water that hasn't been boiled can also contain bacteria. Bring water to a boil and boil for one minute. DC1 (now 11) had all his bottles prepped in this way...made 24 hours in advance then the powder added as needed. Powdered infant formula milk is not sterile. When its feed time, try and heat the water (most cafe's or restaurants have bottle warmers or will provide you with a flask of hot water … The safest way to transport formula is to take cooled, boiled water and the powdered formula in separate containers. 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