Porvair plc operates in the filtration, laboratory, and environmental technology business through three segments: Aerospace & Industrial, Laboratory, and Metal Melt Quality. The Aerospace & Industrial segment designs and manufactures specialist filtration equipment for aerospace, energy, and industrial applications. The Laboratory segment designs and manufactures instruments and consumables for environmental and bioscience laboratories, focusing on water analysis instruments, diagnostics, and sample preparation equipment, and also produces laboratory microplates, filters, tubing, pipette tips, and related consumables. The Metal Melt Quality segment designs and manufactures porous ceramic filters for filtering molten metals, including patent-protected filters for the aluminum cast house industry, gray and ductile iron, and superalloys used in turbine blade manufacturing. The company also engages in trading activities and operates in the United Kingdom, Continental Europe, South America, the United States, Asia, Africa, and other North American Free Trade Agreement countries. Porvair plc was incorporated in 1982 and is based in King's Lynn, the United Kingdom.