Please see questions above for information about molecular distillation. All fish oil‚ regardless of the kind of manufacturing process used, needs to be processed in order to remove contaminants and pass minimum laws and standards (such as California’s Proposition 65). This process always requires the use of heat. This includes so-called “cold-pressed” fish oils. Cold-pressed oil also must also use heat during processing to turn the raw material into oil and remove impurities to pass minimum laws and standards.
Nordic Naturals does not use “cold-pressed” processing because it has not been shown to provide a superior quality product. Independent lab results consistently show that our processing techniques deliver oils of exceptional quality and freshness. Certificates of Analysis are available on our website; simply enter your lot number to view the certificate for your specific bottle.