Sterility throughout the manufacturing process is something no pharmaceutical company can overlook, both from a regulatory and a customer care standpoint. That said, the actual processes in place to maintain good manufacturing practices are much more complex than some might think. Benoît Ramond is deeply embedded within the world of contamination control, both as doctor in pharmacy at the University of Paris XI and as head of microbiology and sterile technology expertise for Sanofi. Here, he explains what is required to meet contamination control standards.