How long does the baby bottle last and needs to be replaced with a new one?

　　In fact, this needs to be determined according to the material of the milk bottle. If it is a glass milk bottle, it needs to be replaced with a new one after about a year of use or not, as long as it is regularly sterilized with high-temperature boiling water.

　　But plastic bottles have a shorter lifespan. There are many kinds of plastic oil, such as PP, PES, PPSU, etc. Different materials also have different shelf life. Generally speaking, the service life of PP milk bottles is relatively short, only 3 months; PES and PPSU can be used for about 6 months. But if the plastic bottle shows signs of aging, it can also be replaced in advance.

　　1. Cleaning difficulty: The inner wall of the glass bottle is smooth and easy to clean, but the inner wall of the plastic bottle is not easy to clean, so the plastic bottle is easy to be dirty.

　　2. Drop resistance: We all know that glass baby bottles are too easy to break, while plastic baby bottles are more resistant to falling, because the strength of glass is not as strong as that of plastic, and glass baby bottles should not be carried .

　　3. Heat resistance: glass has much higher heat resistance than plastic, so glass milk bottles are not easy to deform compared to plastic milk bottles. And some plastic bottles are heated and are prone to emit some unpleasant odors.

　　4. The degree of wear of the scale: At this point, plastic milk bottles have absolutely no advantages. Generally speaking, the capacity scale of glass feeding bottles will remain clear for a long time, but the capacity scale of plastic feeding bottles can easily become blurred and unclear due to temperature changes and cleaning.

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