KIKI Health Organic Chlorella Tablets are carefully cultured, harvested and dried at low temperatures. The freshwater ponds are filled with carefully filtered water extracted from deep below the ground and the tablets are routinely tested for heavy metals, including mercury, lead and other contaminants to ensure that the finished product is completely pure. No binders are used to produce KIKI’s Chlorella Tablets, they contain only 100% pure chlorella powder which has been compressed into a tablet, completely free from fillers and additives.