Porvair plc develops, designs and manufactures specialist filtration and separation equipment. It serves aviation, energy and industrial process, environmental laboratories and non-ferrous metals markets. It operates in two divisions. The Microfiltration division consists of the Porvair Filtration Group, Porvair Sciences and Seal Analytical (Seal). It also provides bespoke filtration solutions to a diverse range of customers and markets. It serves aviation, environmental laboratory and energy markets. The Metals Filtration division serves global aluminum, NAFTA iron foundry and super alloy markets. The Metals Filtration division serves the global aluminium, NAFTA iron foundry and super-alloy markets. Effective September 26, 2013, Porvair PLC acquired Thomas Cain Inc, an manufacturer of laboratory equipment.