2013VDI 2119-2013 Ambient air measurements - Sampling of atmospheric particles > 2,5 ?m on an acceptor surface using the Sigma-2 passive sampler - Characterisation by optical microscopy and calculation of number settling rate and mass concentration
1997VDI 2119 Blatt 4-1997 Messung partikelfoermiger Niederschlaege - Mikroskopische Unterscheidung und groessenfraktionierte Bestimmung der Partikeldeposition auf Haftfolien - Probenahmegeraet Sigma-2
1991VDI 2119 Blatt 4-1991 Particulate deposition measurement; size fractionated measurement of particulate deposition rate by collection plates; sampling devices sigma 1 and sigma 2