There are many challenges involved, given that cleanrooms are enclosed environments—designed to be airtight, typically pressurized, and consisting of one or more rooms. But the key point to remember is that while cleanrooms require such extraordinary levels of technical expertise and precision, it is because they guarantee both the quality of the final product (whether it be medications, food, or even car batteries) and the health of the people undergoing surgery there, in the case of a hospital operating room! Air treatment in cleanrooms therefore addresses issues of well-being, health, food safety, and sustainable development all at once—hence the passion and professionalism that drive its members.
More specifically, within cleanrooms, the first priority is to control particulate contamination—whether living, inert, or chemical. To prevent external contaminants from polluting the products inside the cleanroom and spreading through the air, the cleanroom is pressurized. Conversely, when contaminants are present inside the cleanroom, the room is depressurized to prevent them from escaping to the outside. All of this is carried out within protected systems, potentially using ventilated suits to contain the operators. In this type of facility, we use a dual-flow ventilation system that relies entirely on fresh air, with special attention paid to trapping contaminants in the exhaust air using single or double BIBO filters. The filters in these BIBO units are regularly replaced, disinfected, and autoclaved.