5. Measure the formula

Carefully measure the amount of water and formula you add. Too much water might cause the formula to fail to meet your baby's nutritional needs. Too little water might cause your baby to become dehydrated.

For ready-to-use formula:

• Pour enough formula for one feeding into a clean bottle.
• Use only formula — don't add water or any other liquid.
• Attach the nipple and cap to the bottle.

For liquid-concentrate formula:

• Pour the amount of water needed into a clean bottle.
• Pour the amount of formula needed into the bottle.
• Attach the nipple and cap to the bottle and shake well.

For powdered formula:

• Determine the amount of formula you want to prepare, following instructions on the package.
• Measure the amount of water needed and add it to a clean bottle.
• Use the scoop that came with the formula container to scoop the powdered formula. Add the number of scoops needed into the bottle.
• Attach the nipple and cap to the bottle and shake well.