Towards predicting the lung fibrogenic activity of nanomaterials: experimental validation of an in vitro fibroblast proliferation assay

Table 1 Physicochemical characterization of MWCNT

	NM400	NM402	NM400 crushed	MWCNTg 2400^b
Diameter (nm)	5 – 35^a	6 - 20^a	18 - 35	20 - 50
Length (μm)	0.7 - 3^a	0.7 - 4^a	0.14 - 0.5	0.7
Impurities	5.38	3.16	5.22	0.37
% Al	0.24	3.00 x 10^-4	0.24	0.15 x 10^-3
% Co	0.58	2.39	0.50	0.10 x 10^-4
% Fe	0.58	2.39	0.50	0.10 x 10^-4
Extent of defects (I_D/I_G)	1.20	1.12	1.20	0.58

ISSN: 1743-8977