How often to change plastic bottles

　　The frequency of replacement of plastic milk bottles depends on the material, usually every 3 months or so.

　　· PPSU and PES

　　The two belong to the same category - polysulfone, which has very high performance, and also has a common disadvantage that is expensive. Baby bottles made of PPSU and PES can be used for a long time. Even under high temperature steam of 145 degrees, the milk bottles of this material can be used for at least twelve years, especially PPSU, which has stronger corrosion resistance.

　　· PP

　　Products made of this material are lightweight, durable, and affordable. However, it is used for a short time, cannot withstand high temperature for a long time, and is very easy to oxidize and corrode. It is recommended to replace it in about 6 months, otherwise the bottle will have milk scale residue and other conditions. This is due to long-term scrubbing and oxidation. When the surface of the product is cracked or worn, please replace it in time.

　　In fact, no matter which brand of milk bottle it is, it must be replaced after a long time, and it is impossible to use it permanently. As far as plastic milk bottles are concerned, usually the usage period stated on the product instructions is ten years or more, but it is recommended to replace them after half a year of use. Glass baby bottles can be used for a long time, as long as they are sterilized frequently.

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