IMSL is a testing and consultancy service specialising in the microbiology of industrial processes, materials and products. It is a private limited company that was formed in October 1996 and is located in purpose-built laboratories and offices 50 km west of London, near Fleet in Hampshire, UK. It has a regional sales office in Potsdam, Germany. IMSL has a diverse customer base from throughout the UK, mainland Europe, the Middle East, USA and the Far East.