This Whatman Polycap HD has a 20.0µm pore size a 75mm caspule filtration area and a 1/2 inch stepped barb inlet and outlet. It is a well-engineered product that offers high filtration efficiency and excellent filtrate purity due to its materials and methods of manufacture. Polycap HD provides a unique advantage in process applications as its performance characteristics fit between gross filters and microporous membrane filters used for final filtration. The 100% polypropylene filter media support system and housing allow usage with a broad range of solutions pH and temperature. It has a high flow and high retention capacity.