We have many quality control checkpoints in place to keep the milk separated. First - each customer's order is processed one at a time. This includes the receiving, the freeze-drying, and the packaging steps.
Second - we track each bag individually. Each bag you send in is labeled with your name and a unique tracking code, and we use this to track each bag of your milk from start to finish. Your milk is freeze-dried inside of a specialized freeze-drying pouch - this patent-pending design allows water vapor to escape while protecting your milk from contamination at any point in the process (we do NOT pool milk on trays for processing). This means that even while in the freeze-dryer, every single bag of your milk is labeled with your name!
With this system, we can include the expression date and any other information you recorded on the custom label provided on each pouch of breast milk powder you receive back (if you did not record any notes, that's okay too! In this case the notes section on your label will be left blank). You can see an example of this here at the bottom of this page.