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.
Thank you for reporting this comment. mksmth is correct. In fact, the grey PVC conduit I buy here has painted on the side that it is treated for UV resistance. I've gone to it exclusively for my garden projects (too bad I didn't know this when I built my PVC greenhouse.....).