Each packaging material, active substance and auxiliary substance used in production processes are tested according to the specified specifications starting from the admission. While the products that are found suitable as a result of the tests go on through the production process, the unsuitable products are returned or destroyed in accordance with the procedures. Regardless of the legislation or standard, all products pass the tests determined and validated chemically, physically and microbiologically. Products that comply with the specified specifications in the semi-product process are transferred to the filling and packaging process. The finished products go through to the laboratory for analysis before being dispatched.