Please note: We will be conducting our annual physical inventory counts on September 28 & 29. Processing times will not be affected but shipping times may be delayed due to this. Thank you for your attention to this and we look forward to continuing to serve you.
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❮ Gold

BioReady Gold Nanospheres – Bare (Citrate)

Citrate is the most common stabilizer used for passive conjugation to gold. The “bare” particle surface is stabilized with weakly-associated citrate molecules that can be easily displaced for passive conjugation. Learn more ❯

New: Read about our Expanded Manufacturing Capability for Large Scale Production of 40 nm Gold Nanoparticles

BioReady products are specially formulated for the attachment of a molecular recognition element such as an antibody for lateral flow and biodiagnostics. Learn more ❯

Provided at 20 OD in aqueous .02 mM sodium citrate.


Don’t see the size you’re looking for? Please contact us about custom and semi-custom ordering.

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Bulk purchasing options are available – please contact us if you are interested

Typically ships within 5 business days

Product number: AUCR40-5M

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Specifications & CoA

TEM Diameter Size Distribution (CV) Example Certificate of Analysis
(How do I read this?)
40 nm ± 4 nm ≤ 15% Download Example CoA
80 nm ± 5 nm ≤ 15% Download Example CoA

Note: approximate ranges below are dependent on diameter

  • Hydrodynamic diameter (DLS): TEM diameter plus to 10 nm
  • Zeta potential: –25 to –80 mV
  • pH of solution: 5.5 to 8.0
  • Particle surface: citrate
  • Solvent: aqueous .02 mM sodium citrate
  • Peak wavelength (λmax): 520 to 550 nm

More Info & Documentation


nanoComposix University

Peer-Reviewed Papers

AUCR 40nm 80nm

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