Biological dyeing firm Colorifix is set to launch industrial-scale trials in partnerships with fashion groups, including H&M, and textile manufacturers such as Switzerland’s Forster Rohner and India’s Arvind. The trials, to begin imminently, will be carried out using Colorifix’s biological dyes, which involve no hazardous chemicals and reduce water use by up to 90 per cent, at dye houses which are already supplying the brands.