Before first use, dissemble all parts of the bottle and wash with undiluted baby bottle detergent and rinse in clean water thoroughly before sterilising. Depending on your preferred method of sterilization, do ensure that the sterilizing instructions of the sterilization device should be carefully observed.
Do note that our PPSU bottles are able to withstand -4 degrees Fahrenheit up to 356 degrees Fahrenheit in temperature while PP and Silicone parts are able to withstand up to 230 degrees Fahrenheit, please do remember to check that your sterilizer does not exceed the aforementioned temperature range.