Division Definition:

UV-treated milk is cow's milk (whole and semi-skimmed) to which a treatment with ultraviolet (UV) radiation via turbulent flow is applied after pasteurisation. The treatment of the pasteurised milk with UV radiation results in an increase in the vitamin D₃ (cholecalciferol) concentrations by conversion of 7-dehydrocholesterol to vitamin D₃.

UV radiation: a process of radiation in ultraviolet light within the wavelength of 200-310 nm with energy input of 1 045 J/l.