BGN ventilation calculator and timerGood air is one of the foundations for health, well-being, performance and good work. People in rooms change the indoor air quality because the CO2 concentration in the air increases when people exhale. Some viruses, such as coronaviruses, are distributed in the room air with the exhaled aerosols. Proper ventilation can lower the risk of infection.But how should it be ventilated? The BGN ventilation app helps you to determine the optimal time for burst ventilation for every room situation. Support from technical ventilation or room air purifiers can also be taken into account.The app provides assistance for the correct ventilation of restaurants, offices, meeting rooms and small businesses. A timer can be set as a reminder.