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Satisfaction Guaranteed 20nm Carboxyl (carboxyl-peg3000-sh) Gold Nanoparticles Your 55% Coupon Inside [utqK28YI]

$51.99 $166.99 -69%

Composition: Carboxyl gold nanoparticlesCore Size: 20nmAbsorption max: 524nmOptical Density (OD): 50Particles per ml: 3.27E+13Carboxyl Surface Density: ~1/nm2 Formulation: Supplied in USP grade purified water Properties Cytodiagnostics PEGylated Gold

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Satisfaction Guaranteed 20nm Carboxyl (carboxyl-peg3000-sh) Gold Nanoparticles Your 55% Coupon Inside [utqK28YI]

Composition: Carboxyl gold nanoparticles

Core Size: 20nm

Absorption max: 524nm

Optical Density (OD): 50

Particles per ml: 3.27E+13

Carboxyl Surface Density: ~1/nm2 

Formulation: Supplied in USP grade purified water 

Properties 

Cytodiagnostics PEGylated Gold Nanoparticles with carboxyl functional groups are made using a unique proprietary protocol resulting in particles with superior size distribution and shape compared to the leading competitor and are ideal for development of covalent gold nanoparticle conjugates. 

The carboxyl functionalized gold surface allows for covalent conjugation of antibodies, proteins and other ligands using standard EDC/NHS coupling chemistry.   

These gold nanoparticles have a narrow size distribution (CV of less than 15%) and more than 95% spherical particles.  

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.

Storage

Store product away from direct sunlight at 4°C. Do NOT freeze. When stored as specified the product is stable for at least twelve months.

Product Data

20nm gold nanoparticles UV-VIS spectrum

Diameter  Peak SPR Wavelength (nm) NPS/ml* Wt. Conc. (mg/ml)* Molar Ext. (M-1cm-1) Size Dispersity (+/-nm) Particle Volume (nm3) Surface Area (nm2) Surface/Volume Ratio Particle Mass (g) Molar Mass (g/mol) Molar Concentration*
20 524 6.54E+11 5.31E-02 9.21E+08 <12% 4.19E+03 1.26E+03 0.3 8.12E-17 4.89E+07 1.09E-09

* All concentrations as indicated at an optical density of 1 (OD=1, i.e. absorbance at peak SPR wavelength with a 1cm pathlength)

 

Product Sheet & SDS

 Product Sheet

 Safety Data Sheet (SDS)

QC Conjugation Kit - Product Sheet

What Our Customers Say

January 17, 2026

Absolutely no complaints!

It's a very well-designed and effective item. I'm a satisfied customer.

- Imran G..

January 17, 2026

Absolutely no complaints!

Works perfectly and is incredibly well-made. Highly recommend.

- Noah B..

January 17, 2026

Absolutely no complaints!

A truly superior product. I'm delighted with my choice.

- Jaxon H..

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