Sofi Filtration's patented Sofi Alchemist filter system combines ultrasound-powered self-cleaning with capture of ultra-fine particles down to 0.3 micrometres. The technology is stated to enable up to 20% higher recovery of critical minerals from existing mines while cleaning process waters. Its established Sofi Prima line has been used for over a decade in power plants, construction and the pulp and paper industry. Systems are delivered under a build-own-operate 'Sofi-as-a-Service' model, including a recent deployment at Terrafame's Sotkamo nickel sulphate plant.