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Stabilized Gold Nanoparticles

SKU EM4000002

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Due to the increased stability, these gold nanoparticles are ideal for use in physical and optical applications.


Stabilized Gold Nanoparticles

Composition: Tannic acid stabilized gold colloid (5nm – 10nm), Citric acid stabilized Gold Colloid (15nm – 400nm)
Core Size: 5nm – 400nm
Absorption max: 515-520nm (5nm) – 572nm (100nm)
Particles per ml: 5.47E+13 (5nm) – 1.88E+8 (400nm)
Supplied in 0.1mg/ml citrate supplemented with a proprietary stabilizing solution.


Intended use: Adsorption of thiolated ligands such as oligonucleotides and polyethylene glycols. Also, due to the increased stability, these gold nanoparticles are ideal for use in physical and optical applications.

Note: This product is not ideal for protein adsorption. For gold nanoparticles suitable for the adsorption of proteins and other ligands for conjugate development, please see our standard gold nanoparticles.

  • Surfactant stabilized preparations have been optimized for adsorption of thiolated ligands such as oligonucleotides and polyethylene glycols and are ideal for use applications requiring harsher conditions (i.e. higher salt concentrations) than those tolerated by standard gold nanoparticles.


Unconjugated gold nanoparticles are made using a unique proprietary protocol resulting in particles with superior size distribution and shape compared to that of the leading competitor.

Our gold nanoparticle preparations have a narrow size distribution (CV of less than 15%), exceptional protein adsorption properties, and more than 95% spherical particles. In addition, low batch-to-batch variability (+/- 2nm) assures you as a customer always end up with a product within the specified size range ordered.

All of our batches go through stringent quality control prior to shipment to our customers using dynamic light scattering to guarantee size and monodispersity and lot specifications are supplied with each product.


Store product away from direct sunlight at 4-25°C. Lower temperature prolongs the shelf life of the product.

Do NOT freeze. Freezing causes irreversible aggregation of the gold nanoparticles.

When stored as specified the product is stable for at least six months.


  • Conjugate Development (see our gold nanoparticle conjugation kits)
  • Immunostaining
  • Lateral Flow Assays
  • Biological Sensor Development (e.g. LSPR-based assays)
  • Electron Microscopy
  • Dark Field Microscopy
  • Surface Enhanced Raman Spectroscopy (SERS)


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Estimated delivery time:

Europe: 1-2 days
Worldwide: 3-7 days

The estimated delivery times are given by the transport companies from the date of dispatch. 

EMFUTUR guarantees that its products comply with the specifications published on the Website and/or are clearly expressed in a valid offer.

In the event that the material deviates from the stated specifications, the buyer may submit a written complaint within 15 days of receipt of the product, clearly stating the problem encountered and the data confirming his complaint.

After verification, EMFUTUR reserves the right to withdraw the material, exchange it or refund all or part of the cost of the product paid for.

Returns will not be accepted for material incompatibility, misuse, misapplication, incorrect or excessive ordering, improper storage or handling resulting in premature material degradation or loss of performance.

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