randomrach
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Ready made formula is UHT, it is sterile upon opening therefore if stored in the fridge it is extremely unlikely any contamination can occur within 24 hours, powdered formula isn't sterile and with current manufacturing methods it isn't possible for it to be it can also legally contain a certain number of bacteria, viruses and other contaminants so if made up and stored in the fridge it could potentially breed bacteria and viruses. UK formulas were reconstituted by the companies making them to only mix properly with water at a certain temperature; with all the mainstream formulas that temperature is 70 degrees. If you call their helplines they can confirm this. Hipp did add probiotics to their formula and redesigned the powder to mix at 40-50 degrees but they have now had to remove the probiotics and are now instructing to make it up at 70 degrees again xx
So, is the powder not sterile when mixed with boiling hot water? (above 70 degrees) I honestly think they are over cautious but that is just my view. Of course everyone has to do it a way they're happy with