This process removes all the impurities such as mercury, metals and PCB???s from the oil and makes it a purer product that is safer for human consumption.How will you know they are my authentic product? 1) Ordering directly from my Product Line ensures you are receiving Genuine Dr. Ho Omega 3 products. 2) Starting 2009, each and every one of my Seal Oil capsules will have the Dr. Ho Seal of Authent