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.
CMC USES. Carboxymethyl cellulose (CMC) is a water-soluble anionic linear polymer. In food, pharmaceutical and cosmetic applications, highly purified types (99.5%+) are required and are referred to as cellulose gum. Technical grades (90-99.5%) are used in adhesives, coatings, pulp and paper, textiles and other industrial applications.