Porvair plc is a specialist filtration and environmental technology company engaged in the development, design and manufacture of filtration and separation equipment. The Company's operating divisions include Metals Filtration and Microfiltration. The Metals Filtration Division designs and manufactures porous ceramic filters for the filtration of molten metals, principally aluminum. The Microfiltration Division designs and manufactures a range of filtration equipment for application in aerospace, energy, bioscience, water and industrial applications. It is developing a range of products, including the products for the manufacture of turbine blades, solar panel manufacture and energy storage. It operates Microfiltration division through its subsidiaries, Porvair Filtration Group, Seal Analytical and Porvair Sciences. It operates Metals Filtration Division through its subsidiary, Selee Corporation. It has plants located in the United States, the United Kingdom, Germany and China.