Buys US hazardous material detection specialist for $75M Smiths Group is acquiring the business and assets of SensIR Technologies LLC, a manufacturer of infrared-based analysers, for a total of $75 million (£41m). The newly acquired business will add significantly to the range of technologies and equipment of Smiths Detection, one of the company's four operating divisions. "The second acquisition for Smiths Detection this year is a further step in building a technology-led business to serve the diverse detection market," commented Keith Butler-Wheelhouse, chief executive of Smiths Group. SensIR supplies analysers for the identification of potentially hazardous substances in solid and liquid form.