Life cycle analysis as such does not have a certification system (ISO14044), only a review system. This is often done by critical review of a limited number of experts. At Pickler we believe that every reader is a critical reviewer, and therefor open up all the assumptions and supporting evidence. In order words, Pickler is certified by the mass.
Do you anything that can be improved? Let us know, and we make sure that your import will be scientifically reviewed and directly implemented if this leads to an improvement.
In general, the environmental screening methodology follows the guidelines of Sustainability Impact Metrics (TU Delft) that are described in their LCA guide.