Plant nutritional requirements are important to consider in light of the understanding that human beings derive many of their own nutritional requirements from the plants that are consumed to fuel our own metabolism. The elements of the periodic table, especially the essential nutrients, play a key role in metabolism in many organisms, especially ones involved in providing human nutrition. That reason is why many world regulatory organizations require testing and monitoring of elemental levels in food for human consumption. Organizations such as the FDA, provide labeling requirements that reflect the levels of critical elements (and other components) in food. Spex CertiPrep is a proud partner with many agencies and laboratories around the world to provide standards of elemental nutrients for the betterment of global food safety testing.