You also need a product of high purity, i.e. one that has had any heavy metals and toxins removed. (whatreallybuildsmuscle.com)
He believes that water companies are backing away from research because they fear it will demonstrate a need for higher purity standards. (newscientist.com)
All the ingredients that go into our products are tested for heavy metals and other contaminants, and only those that pass very high purity standards are approved and used in production. (leanfit.com)