Minimum ventilation rates. Minimale Lueftungsraten.

Lists in a table and discusses the chief sources of indoor air pollution. Distinguishes between short term and long term pollution. Provides advice for reducing pollution from various sources. Discusses the minimum permissible fresh air supply rates. Gives recommended humidity values and when, how often and for how long should ventilation be carried out. Recommends 12-15 m3 fresh air per person per hour, with double this rate for physical activity or smoking. States fresh air supply should be monitored to ensure the carbon-dioxide content does not exceed 0.15%.