Colloidal Gold for Diagnostics

Surface: Citrate
Description: Easiest standard surface to displace with other molecules.
Solvent: 0.02 mM sodium citrate

TEM Diameter: 20 ± 3 nm
CV: ≤ 15%

Hydrodynamic diameter (DLS): TEM diameter + 0–10 nm
Zeta potential: ≤ –25 mV
pH of solution: 5.5–8.5
Peak wavelength (λmax): 515–560 nm

Surface: Citrate
Description: Easiest standard surface to displace with other molecules.
Solvent: 0.02 mM sodium citrate

TEM Diameter: 40 ± 4 nm
CV: ≤ 15%

Hydrodynamic diameter (DLS): TEM diameter + 0–10 nm
Zeta potential: ≤ –25 mV
pH of solution: 5.5–8.0
Peak wavelength (λmax): 520–550 nm