Table 2.
Characteristics of nanoparticle samples used in the study
| Particle composition | Source | Round robin | Nominal size (nm) | Initial concentration (% solids) | Diluent |
|---|---|---|---|---|---|
| Gold | BBI | 1 and 2 | 30 ± 2 (TEM) | ~0.01 | H2O |
| Carboxylated polystyrene | Invitrogen | 1 and 2 | 100 ± 11 (TEM) | ~0.1 | H2O |
| Aminated polystyrene | Polysciences | 1 and 2 | 100 | ~0.1 | H2O |
| Silica | Polysciences | 1 and 2 | 100 | ~0.1 | H2O |
| Polystyrene | Thermo Scientific | 3 | 102 ± 3 (TEM) | ~1 | H2O |
| Gold | BBI | 3 | 60 ± 3 (TEM) | ~0.01 | H2O |
| Gold | BBI | 3 | 81 ± 4 (TEM) | ~0.01 | H2O |
| Polystyrene | Thermo Scientific | 4 | 102 ± 3 (TEM) | ~1 | H2O, Ham’s F10 Nutrient Mix, BSA |
| Polystyrene | Thermo Scientific | 4 | 203 ± 5 (TEM) | ~1 | H2O |
| Gold | BBI | 4 | 81 ± 4 (TEM) | ~0.01 | H2O |