Installation of a Sanity Air filter system inside the submarine - Backed by Europe's best laboratories. Sanity Air complies with all safety, innocuous and energy efficiency certifications, with 99.97% disinfectant effectiveness. Certificate of Efficiency: The Spanish Technical Cleaning Institute (ITEL) certifies compliance with all applicable safety regulations and certifies that Sanity Air has a disinfectant efficacy against bacteria or viruses of 99.97%. In addition to its effectiveness, its safety is certified in humans, other living beings and materials. -Top brand components. Spanish design and manufacture with all European components of the highest quality such as Philips, Osram... -Guaranteed security. Certified use of ultraviolet light to sterilize rooms without being harmful to people, animals or plants. -100% eco-friendly. Minimal use of plastics.100% recyclable.