2013VDI 3867 Blatt 5-2013 Measurement of particles in ambient air - Determination of the particle number concentration and particle size distribution of aerosols - Time-of-flight spectrometer
1996VDI 3489 Blatt 8-1996 Particulate matter measurement - Methods for characterizing and monitoring test aerosols - Time-of-flight spectrometer
1995VDI 3489 Blatt 8-1995 Messen von Partikeln - Methoden zur Charakterisierung und Ueberwachung von Pruefaerosolen - Relaxationszeitspektrometer