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Infant formula: 7 steps to prepare it safely

7. Store formula safely

If you're using ready-to-use formula, cover and refrigerate any unused formula from a freshly opened container. Discard any leftover formula that's been in the refrigerator more than 48 hours.

If you prepare and fill several bottles of liquid-concentrate or powdered formula at once, do the following:

  • Label each bottle with the date that the formula was prepared.
  • Refrigerate the extra bottles until you need them.
  • Discard any prepared formula that's been in the refrigerator more than 24 hours.

If you're unsure whether a container or bottle of formula is safe, throw it out.

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