Technical guide
How UHT milk is stored
Unopened UHT milk can be stored at room temperature when the heat treatment and aseptic package are validated together.
The product is heated briefly, cooled and transferred to the filler through an aseptic path. The sealed package needs to protect the treated product during shipping and storage.
Testing shelf life means checking both microbial safety and slow changes in taste, color, or separation. Test results apply only to the exact recipe, heat treatment, package, and storage temperature used in the study.