Environment, Hygiene and Sensor Technology
Measurement | Survey of airborne germs of indoor air by filtration in comparison to outdoor air |
Standards | DIN ISO 16000-16, DIN ISO 16000-17, DIN ISO 16000-18, DIN ISO 16000-19, VDI 4300-10 |
Measurement object | Indoor air in comparison to outdoor air |
Test volume | For short-term measurement typically 50 L for each filter |
Test duration | Nine-fold measurement, approx. 30 min for each reading point |
Processing | Preparation of the measured rooms according to VDI 4300-10 |
Evaluation | According to UBA guide, counting of germs growing after 3, 7 and 10 days |
Culture media | Use of microbiological culture media for mesophilic and xerotolerant fungi and airborne bacteria as a matter of routine |
Flexibility | Use of gelatine filters allows also the application of a dilution series, apart from direct cultivation – depending on the expected germ load of the investigated air |