CARE OF BOTTLES AND NIPPLES
When there is a bottle for each individual feeding in the day, immediately after each nursing both bottle and nipple should be rinsed in cold water and left standing, filled with water, until the bottles for one day's feeding have all been used. The nipples should be scrubbed, rinsed, and wiped dry and kept by themselves until their boiling preparation for the following day's feeding.
If the same bottle is to be used for the successive feedings during the day, it should be rinsed, washed with soap and water, and both bottle and nipple placed in cold water and brought quickly to the boiling point and allowed to boil for fifteen minutes. No bottles or nipples must ever be used after a mere rinsing; boiling, preceded by a thorough washing in soap and water, must take place before they are used a second time.
New nipples are often hard and need to be softened, which is readily done by either prolonged boiling or rubbing them in the hands.
All new bottles should be annealed by placing them on the stove in a dishpan of cold water and allowing them to boil for twenty minutes, and then allowing them to remain in the water until they are cold. When bottles are treated in this manner they do not break so readily when being filled with boiling water or hot food.