The algae oil is produced in the United States. We can't explain the production process in detail for confidentiality reasons but one can be assured that all operations are state of the art, according to regulations for foodstuff oils. The oil is received from the algae through a solvent-less process. Solvent-less means without any solvent. The algae culture is pasteurised (cooked) so that the oil separates from the cells. The oil is then skimmed off the water phase. The oil is treated under as mild as possible conditions and mostly under vacuum to avoid contact with oxygen.  Then approved antioxidants are added to the oil to provide teh stability. And finally the DHA and EPA percentages may be standardised by the addition of food grade vegetable oil.