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Table 2 Fractionation of airborne MMVF. Weight gain of the total initial MMVF mass per fraction

From: Composition, Respirable Fraction and Dissolution Rate of 24 Stone Wool MMVF with their Binder

Impactor stages, aerodynamic diameters MMVF #2 MMVF #5 MMVF #12 MMVF #17 (pre-1995)
< 7.6 μm 2.40% 0.29% 6.29% 3.65%
< 4.1 μm 0.22% 0.02% 0.13% 0.04%
< 1.2 μm 0.08% 0.01% 0.08% 0.01%
< 0.3 μm 0.03% <<0.01% 0.04% <<0.01%
< 0.1 μm <<0.01% <<0.01% <<0.01% <<0.01%