The Kirkman line of nutritional supplements are uniquely manufactured to a higher standard for purity. Every batch of raw materials for every product is tested on Mass Spec equipment for over 950 different harmful environmental contaminants. No other company in the WORLD is testing their products to this degree. How do you know what's in the raw materials unless you're testing? 24 Heavy Metals, Bacteria, yeast, mold, pesticides and much more. Please stop by our booth, as we would love to meet you.