HT Tips

How To Sterilize Baby Bottles

From the time your little bundle of joy has arrived, both of you may be enjoying and strengthening the bonding through breastfeeding. Surely, breastfeeding is ‘the best’ for both of you. But, time may come where you will need to start bottle feeding for various reasons such as insufficient breast milk, illness, or the end of your maternity leave.

Bottle feeding is comfortable for many reasons, the prominent one being that it can be done by anybody at home and not just you. However, there is a not-so-comfortable fact about it, i.e., washing and sterilizing the bottle. Your little one is quite vulnerable to diseases and infections as her immunity is not yet well-developed (1). Thus, it is essential to ensure that the feeding equipment is free from microbes.

MomJunction gives you tips and tricks for sterilizing baby bottles and cut down the risk of your little one being infected.

Why To Sterilize Baby Bottles?

Several microorganisms like viruses, bacteria, and fungus can deposit in the bottle. They mix into the baby’s milk and enter her body, leading to vomiting, thrush, or diarrhea. It is, therefore, necessary to sterilize the feeding bottles properly before use.

You need not have to sterilize them after every feed, as long as you are washing them with hot water and storing in a sterile container. It is advisable to sterilize bottles once in a while. If your baby was recently down with flu or cold, you need to sterilize the bottles more frequently.

Even though the babies develop better resistance against infections by the time they turn one, continue sterilization as long as she is on bottle feed.

Must-Do’s To Sterilize Baby Bottles

There are certain inevitable things to do for complete sterilization of your baby’s milk bottles.

1. Use Filtered Water

Regular tap water may have contaminants. It is basically hard water, which means that it can leave a residual layer of salts inside the bottle and other equipment. Therefore, use filtered water for sterilization. Even if you are using a steam sterilizer, you should use filtered water to ensure complete protection (2).

2. Clean The Bottles

Before sterilizing, clean the bottles, nipples, retaining rings and the scoop of the milk formula tin with warm soapy water.

You can clean the bottle and its parts using a bottle brush. While cleaning, rotate the brush to remove any dried milk or milk powder from the equipment.

Dishwasher, too, can be used to clean the feeding bottles. Place them on the top rack of the washer and run on a warm cycle (so that they do not melt).

Remove any traces of milk on all the bottle parts, including the lids. Turn the nipples inside out and wash.

Wash them just after feeding your baby to avoid the drying up of the leftover milk. After finishing the cleaning process, carefully rinse all soap. Clean your hands thoroughly before proceeding to sterilization.

3. Buy Food Grade Plastic Ware

If you are buying plastic feeding equipment for your baby, always go for food grade quality. Opt for the ones that are BPA-free or buy glass bottles (3). Do not forget to sterilize new bottles before use. Unless there are specific instructions, glass bottles can be sterilized in the same way as the plastic ones.

Regularly check the bottles and nipples for splits, scratches, or cracks and replace the damaged feeding equipment. Bacteria tend to accumulate in such places and survive even after cleaning and sterilization.

4. Dry Separately

Use clean and exclusive cloth to dry the sterilized bottles. Keep them on a separate shelf, and if possible, in an airtight container to avoid contamination due to dust. You can also seal them in a zip-up mesh.

5. Open Just Before Feeding

Remove the bottles from the sterilizer only before feed time. Keep the sterilizer covered with a lid until you need a bottle, to keep the feeding equipment free of germs.

6. Wash Your Hands

Wash your hands thoroughly before removing the bottles from the sterilizer. You may also use sterilized tongs to pull out accessories like teats and place them ready for use on the upturned lid of the sterilizer or on a clean surface.

Do not keep the sterilized bottles out for long. Put them in sterilizers within storage facilities (if available) and remove just before use. If you could not use the sterilizers, then re-sterilize them if the bottle is taken out and left out for a long time.

Different Methods Of Sterilizing Baby Bottles

There are various methods of sterilizing baby bottles. Here are a few most-used methods, with their set of advantages and disadvantages.

1. Boiling

It is the most common method of sterilization. This is simple but make sure that the bottles are safe to boil.

  1. Take a big deep vessel with a lid, fill enough water to immerse the bottles and other parts fully, without any air bubbles. It is better to exclusively use the vessel for this purpose.
  1. You may have to weigh down plastic bottles with a heavy object, as they tend to float on the surface of the water due to their lightweight.
  1. Parts of the bottle should not touch the bottom of the vessel, as direct heat may damage them. Glass bottles might crack, and plastic might melt.
  1. Boil them for around 10 minutes.
  1. Cover the vessel until you need to use the equipment.

The drawback with this method is that the bottle’s parts tend to get damaged faster than in other sterilization methods.

2. Cold Water Sterilizing

For cold water sterilization, you have to use a sterilizing solution or sterilization tablet diluted in cold water. These are effective against bacteria but can last only for 24 hours.

Various exclusively designed units are available in the market for this purpose or you can also use any plastic container with a lid. But, do not use the same plastic container twice as the sterilizing solution can affect the plastic and make it unusable. Follow these steps.

  1. Completely immerse the equipment in water. Ensure that there are no air bubbles in them.
  1. Follow the manufacturer’s advice on the quantity of the solution or cold water to use.
  1. Leave them for half an hour.
  1. Remove the nipples and bottles during feeding time.
  1. After taking the bottle and its equipment from the solution, shake well and rinse with boiled and cooled water.
  1. Discard the solution after 24 hours and clean the sterilizing container thoroughly using warm soapy water before preparing a fresh solution.

3. Steam Sterilizing

This method involves electric or microwave sterilizer is an effortless and quick process. You must follow the manufacturer’s guidelines to sterilize through this method.

Electric Steam Sterilizing:

The process usually completes within 12 minutes, with the additional cool down time.

  1. Fill the steamer with water and put the bottle and its parts in it.
  1. Close the lid and allow steam for a few minutes.
  1. Bottles remain sterile for about six hours if the cover is kept unopened.

Check if the equipment is allowed to steam, before placing inside the machine. Steam sterilizers can hold six bottles at a time and have separate racks for smaller items like nipples.

Place the feeding equipment and bottles with their open side facing downwards in the electric steam sterilizer to allow the steam to efficiently sterilize the feeding gear.

Microwave Sterilization:

This is another effective type of steam sterilizing, in which you put unsealed baby bottles (to avoid the rise of pressure in the bottle) in the microwave individually for about 90 seconds. It is a very quick method of sterilization. Before proceeding, make sure that your microwave is clean.

  1. Half fill each baby bottle with water.
  1. Place each bottle upright inside the microwave.
  1. Place nipples and rings in a microwave-safe bowl filled with enough water to cover them.
  1. Microwave for approximately a minute and a half.

*Note: Wait before moving the bottles and nipples and be careful to avoid burning of your hand.

You can try microwave steaming with steamers specially designed for the purpose. It takes three to eight minutes for sterilization, with cooling time extra. The time taken may vary based on the model and wattage. The process is simple:

  1. Add water to the steam sterilizer.
  1. Toss the bottles in the microwave.
  1. A simple beep calls you to collect the sterilized stuff.

The benefit with electric sterilization or a microwave sterilization method is that the bottles remain sterile for about six hours if the cover is unopened. They do not leave any lingering taste or odor after the process.

4. Sterilizing With UV light

Ultraviolet light can purify water by killing bacteria, viruses, and mold. However, the technology is being used for baby products as well.

As it is still a new technology for baby bottles, there are no devices which can sterilize an entire feeding bottle. All you get is a UV device that can sterilize the nipples or pacifiers. Despite this shortcoming, the devices are portable and lightweight. Sterilization can be done within three minutes.

Unsterilized bottles attract bacteria, parasites, and viruses, making the baby vulnerable to various infections. So follow any of the above methods of sterilization to help keep the feeding equipment clean.

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