Gold Dispersions

Nanografi’s Gold Dispersion (Colloidal Gold)—engineered as high-quality, monodisperse nanoparticles—delivers reproducible optical / biochemical performance that researchers, diagnostic developers and high-tech manufacturers can trust.

Developed and produced at our advanced R&D and manufacturing facilities at best prices, it achieves peak performance across a broad spectrum of applications, ensuring consistent, reliable and efficient results from concept to commercialization.

What is Colloidal Gold?

Colloidal gold is a stable suspension of metallic gold nanoparticles dispersed in a fluid medium. First documented for its striking ruby-red hue, it rapidly became a cornerstone material thanks to its:

• Distinctive Surface-Plasmon Resonance (SPR)–based color change
• High biocompatibility and low cytotoxicity
• Exceptional ease of surface functionalization (thiols, antibodies, DNA, polymers)
• Robust chemical inertness and long-term colloidal stability
• Broad size-tunability accommodating diverse research and industrial needs

Applications of Colloidal Gold

Available as ready-to-use aqueous dispersions, colloidal gold’s unique optical and surface chemistry make it indispensable for rapid lateral-flow diagnostics, biosensors, drug-delivery carriers, cancer imaging and photothermal therapy, catalytic processes, plasmonic electronics, cosmetics, and premium conductive inks. Its visible, size-dependent color change underpins many over-the-counter test kits and cutting-edge biosensing technologies.

Buy Colloidal Gold Today

Explore Nanografi’s extensive colloidal gold portfolio—from citrate-capped 5 nm sols to PEG-stabilized 100 nm dispersions—offered in 25 ml to 1000 ml packs and bulk custom volumes. Competitive pricing, rapid global logistics, and dedicated technical support help you translate ideas into high-impact products without delay. Order today and power your next breakthrough with Nanografi Colloidal Gold.