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Testfakta is an independent test- and research company, specialized on laboratory tests and evaluations of consumer products. All of their tests is preformed by certified test- and research laboratories, specialized within different product- and test areas. Find out more regarding their methods in this link; http://www.testfakta.se/om-testfakta. Interpretation and grading of the test results is made by Testfakta in consultation with laboratories and external experts.