Bischof’s Patents Spongy Iron Filter. Murray & Co Glasgow
— 13/06/2020This product is in the possession of Ian Suddaby. Ian states – “Gustav Bischof was Professor of Technical Chemistry at the Andersonian University in Glasgow and in 1863 he invented and patented the process of filtering water through spongy iron and sand to purify it. It won a number of international medals from 1872 on….