Hi, any mummies using UV sterilizer on MAM bottles and spectra pump parts? I realised mine turned yellow after a month and got me very worried as my boy is still an infant. Anyone experiencing the same?

Yes uv sterilizer ages PP bottles very fast.. Should replace them when they have turned opaque or changed color otherwise chemicals may start to leech. I've switched to PPSU bottles for UV sterilization, and use steam sterilizer on pump parts. Spectra also sells PPSU bottles https://shopee.sg/product/242594539/5732034154?smtt=0.0.9