Stool Culture. Test Overview. A stool culture is a test on a stool sample to find germs (such as bacteria or a fungus) that can cause an infection. A sample of stool is added to a substance that promotes the growth of germs. If no germs grow, the culture is negative. If germs that can cause infection grow, the culture is positive.
color and is used for irrigation, water handling and other relatively low pressure jobs. Schedule 80 PVC is. usually dark gray in color (though it can come in other colors) and is primarily used in more heavyâduty. applications like industrial and institutional settings.
1 Blue electrical nonmetal tubing (ENT) is for indoor use only. PVC fittings can be used with ENT inside walls, floors, some ceilings or encased in concrete. 2  Outdoor flexible nonmetallic tubing is strong and watertight, non-corrosive and weighs less.  Metal or plastic boxes can be used with nonmetallic conduit.