I read in my sterilizer manual that it's fine to use the silicone parts even when they turn yellow. It's not an indication of deterioration. If you UV them every time after wash, it will start to turn yellow by the 2nd week. So I change them according to wear and tear or the schedule recommended by the manufacturer. Some rubber/latex parts cannot be sterilized with UV sterilizer bcos it will harden. Can only boil or steam.
Mine does turn to yellow over time. As for bottle teats, I tend to replace them anyways as they tear cause my baby like to bite them. And pump parts you have to replace them anyways depending on how often you pump. Some parts need to be replaced monthly. This is so that you can pump efficiently https://exclusivepumping.com/when-to-replace-breast-pump-parts/
yes useless yours using ppsu bottles. I change the moment they turn yellow. maybe you can use traditional method in sterilising the pump parts etc using hot water.
How fast will they turn yellow?
it's dependent on the products. some products will indicate safe for uv sterilization.
Anonymous