| http://www.w3.org/ns/prov#value | - Typical impurities that coat and foul the exterior surface of a membrane that is immersed in a sample medium are biological growths such as bacteria, algae and sponges, mineral matter such as calcium and magnesium carbonates, silicates and iron hydroxide, and organic matter such as greases, fats, oils or other polymeric material.
|
