👉 Filtrates are a type of material used in the filtration process. They consist of a layer of material that is placed on top of the fluid to allow it to pass through without being filtered out by the filter. The material can be made from various materials such as paper, glass, plastic, or metal. Filtrates are typically used in water treatment systems to remove impurities and contaminants from the water, such as bacteria, viruses, and other pathogens.