TÜV Austria is an independent certification program for products that meet all requirements of the European EN13432 standard.

The OK Biobased certification, provided by TÜV Austria, is an independent evaluation of the renewable carbon content in a product. On a basis of the determined percentage of renewable raw materials (% Biobased), the product can be certified as one-star-biobased (20% – 40% biobased content), all the way up to four-star biobased (upwards of 80% biobased content.)