Industrial Bio-Test Laboratories

Industrial Bio-Test Laboratories (IBT Labs) was an American industrial product safety testing laboratory. IBT conducted significant quantities of research for pharmaceutical companies, chemical manufacturers and other industrial clients; at its height during the 1950s, 1960s, and 1970s, IBT operated the largest facility of its kind and performed more than one-third of all toxicology testing in the United States.

Source: Wikipedia — Industrial Bio-Test Laboratories (CC BY-SA 4.0)