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.
In a nutshell, PVC plastic is uniquely toxic among plastics because of its highly toxic ingredients which readily migrate into the environment during its production, its use, and its disposal.Pure PVC plastic is 57% chlorine, a toxic substance whose production generates substantial pollution (see below). Vinyl is the least recyclable plastic because of the diversity of additives used to make different types of PVC products. 2  In addition, when PVC-products are accidentally mixed with non-chlorine plastics, they contaminate the entire recycling process.