Table 1.
Agglomerate size (mean ± SD), zeta potential (mean ± SD), and endotoxin contamination of MWCNT in RPMI culture media after dispersion medium preparation.
| Particle | Hydrodynamic Size (nm) |
Zeta Potential (mV) |
Endotoxin (ng/5 μg MWCNT) |
|---|---|---|---|
| MWCNT-source | 396 ± 22.0 | −10.3 ± 0.39 | 0.02 |
| f-MWCNT38.4 | 169.1 ± 50.9 | −12.7 ± 0.34 | 2.4 |
| f-MWCNT23.8 | 57.6 ± 2.3 | −10.4 ± 0.96 | 2.95 |
| f-MWCNT20.6 | 67.0 ± 9.4 | −11.1 ± 0.42 | 2.9 |
| f-MWCNT16.2 | 44.2 ± 32.5 | −11.5 ± 1.01 | 2.7 |
| f-MWCNT15.7 | 272.8 ± 1.1 | −11.1 ± 1.3 | 3.25 |
| f-MWCNT14.9 | 234.6 ± 7.2 | −10.2 ± 1.0 | 3.3 |
| f-MWCNT14.7 | 41.8 ± 1.2 | −11.5 ± 1.2 | 3.2 |