70 nm Platinum Nanoparticles

Product Number


  • Unagglomerated and monodisperse
  • Mean diameter: 70 nm ± 4 nm
  • Size distribution (CV) < 15%
  • Available as NanoXact (0.05 mg/mL) and BioPure (1 mg/mL) concentration
  • Particles have a sodium citrate surface and are provided in aqueous 4 mM citrate

Product Lines

Tight Size
Wide Variety
of Surfaces
Guaranteed Sterile
& Endotoxin-Free
Learn more +
(certain products)

(certain products)
  • Monodisperse and unagglomerated
  • Standard colloidal concentration
  • Seven standard surfaces (citrate, tannic, PVP, lipoic acid, PEG, BPEI, silica)
  • Monodisperse and unagglomerated
  • Concentrated to 1 mg/mL
  • Extensively washed (10×)
  • Manufactured sterile
  • Low endotoxin levels
  • Six standard surfaces (citrate, tannic, PVP, lipoic acid, PEG, BPEI)

Which Surface Should I Choose?

Surface Displaceable Salt
Stable in
Stable in
Stable in
Polar Organics
Stable in
Non-Polar Organics
Conjugatable Charge
at pH 7
Bare (Citrate) Learn more +
  • Most commonly requested capping agent
  • Easily displaceable with other molecules for binding studies or custom functionalization
  • High degree of electrostatic stabilization

Certificate of Analysis Examples

Please note that these are representative Certificates of Analyses (CoAs) provided as examples for this product. We provide a unique batch-specific CoA with each product during shipment; only the CoA that arrives with your product should be referred to for actual characterization and measurement data. If you would like an electronic copy of the CoA for the product you received or the material(s) we currently have in stock, please contact us.

Product Line Surface Example Certificate of Analysis Product # Price
N NanoXact, 0.05 mg/mL Bare (Citrate) PTCN70-25M $50+
N NanoXact, 0.05 mg/mL Bare (Citrate) PTCN70-100M $165+
N NanoXact, 0.05 mg/mL Bare (Citrate) PTCN70-500M $575+
N NanoXact, 0.05 mg/mL Bare (Citrate) PTCN70-1000M $895+
B BioPure, 1 mg/mL Bare (Citrate) PTCB70-1M $195+
B BioPure, 1 mg/mL Bare (Citrate) PTCB70-5M $815+
B BioPure, 1 mg/mL Bare (Citrate) PTCB70-10M $1,395+
B BioPure, 1 mg/mL Bare (Citrate) PTCB70-30M $2,995+

Need help reading our Certificates of Analysis? +