This Whatman Polycap HD has a 0.45µm pore size a 150mm caspule filtration area and a 1/2 inch hose 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. It is constructed of materials that are approved for food contact. Polycap HD is steam autoclavable at 121° C for 20 minutes. It has a manual vent with luer lock to bleed air from upstream or serve as an injection or sample port. It is manufactured in a Class 10000 clean room in an ISO certified manufacturing plant. It is non-pyrogenic and non-sterile and the materials pass USP Class VI. Maximum pressure is 4.1 bar (60psi)