United Water Softeners
of Imperial House, Kingsway, London, W.C.2., works at Brentford.
1913 Company formed by merger of Lassen and Hjort and Water Softeners Ltd, sole proprietors of Permutit base exchange medium.
1917 Agents for Wallace and Tiernan.
1918 Agent for Lassen-Hjort and Permutit water softening plant (see advert).