Founded in 2011 and based in Espoo, Sofi Filtration develops ultra-fine particle filtration systems for industrial process water. Its legacy product, Sofi Prima, has been used for over a decade in power plants, construction, and the pulp and paper sectors. Building on that platform, the company’s new Sofi Alchemist line combines ultrasound-based self-cleaning with 0.3 µm particle capture, enabling up to 20 % higher recovery of critical minerals from mining side-streams. A recent installation at Finnish battery-chemicals producer Terrafame demonstrates the technology’s ability to enhance nickel sulphate output and strengthen Europe’s battery materials supply chain. The firm is preparing industrial pilots while pursuing international expansion from Europe to Türkiye and North America. Earlier this year Sofi Filtration closed a €1 million financing round, and it has now secured a further €900 k to accelerate commercialisation, team growth, and partnership development.

Total raised

$5M

Funding rounds

3

Latest round

Equity

Latest activity

Nov 2025