Figure 2
From: Multi-walled carbon nanotube instillation impairs pulmonary function in C57BL/6 mice

Characterization of MWCNT in Suspension. The size and charge characteristics of the MWCNTs were determined in a suspension of 10% surfactant saline. (A) The size of MWCNT bundles in suspension was determined by dynamic light scattering. (B) The zeta potential and isoelectric point (indicated by the arrow) were determined for the MWCNTs suspended in 10% surfactant saline solution.