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.
Some of the non chlorinated vinyls (EVA, PEVA, PVA and PVB) are now beginning to be used as direct substitutes for PVC. EVA has been in use for several years as a chlorine free substitute for PVC â primarily in non building materials like toys and athletic shoes, but occasionally as a protective film or binder.