We offer meticulously designed hopper magnets that are exclusively used by the plastic industry. These magnets protect the molding machinery and other processing equipment from damaging ferrous metal. Our range of hopper magnets is easy to remove small particles of ferrous metal from free flowing powders and granular material. These permanent magnetic separators offer a cost efficient way of removing harmful tramp metal and light concentrations of ferrous contaminants from chemicals, pharmaceuticals, cosmetics, plastic, food, grain, fertilizer, sand, clay and minerals.