The Water-Holding Capacity of Perlite

The natural size and unique structure of expanded perlite makes an ideal framework to hold water. Perlite holds water in one of three ways: in between individual grains, in channels leading to the cores ofthe grains and on the highly irregular surfaces of each particle (Fig. 1). The surface of perlite is made up of the outer convex shells of …

Perlite for Water Quality Management

The physical character of expanded perlite lends itself to a variety of special purposes—including various applications in the broad category of water quality management. For a detailed explanation of perlite expansion see information sheet: Why Perlite Works Storm Water Filtration Due to its high surface area, neutral pH and irregular, porous surface texture, expanded perlite is ideally suited for a variety …