Depth type media consists of what material that captures dirt?

The correct response indicates that depth type media is characterized by a matrix of fibers, which plays a crucial role in capturing dirt and other particulate matter. This type of media typically utilizes a structure comprised of interwoven fibers that create a network allowing for effective filtration. The design of the fibers ensures a large surface area where dirt can accumulate, leading to high efficiency in capturing contaminants as fluids or air pass through the material.

In contrast, the other materials listed do not serve the same function in the context of depth type media. Clay, while it has some absorbent properties, is not specifically structured to capture dirt in the same way a fibrous matrix does. Charcoal is primarily used for its adsorptive qualities but does not have a similar structural capability to effectively filter particulates out of flowing substances. Fuller's earth, a natural clay material, is often used for its absorbency properties but, again, does not embody the structural characteristics necessary for capturing dirt effectively through a depth filtration approach.

Understanding the properties of each material helps clarify why a matrix of fibers is specifically designed to handle dirt capture in filtration systems.