Hungry? Growing fungus will use wood, paper, leather, hydrocarbons, PVC, polyurethanes, certain plastics, plants and other materials as fuel. Products which are expected to operate in warm, humid environments must be tested to withstand fungus, the growth and waste of which can wreak havoc on your product.This image, taken by NTS Compliance Engineer Tom Borrelli in our Tinton Falls, NJ laboratory, is of fungi feasting on a contaminate they found on the side of a connector. This test is conducted using method 508.5 in accordance with the MIL-STD-810F specification.