Silver Dispersions

Nanografi’s Silver Dispersion (Colloidal Silver) comprises high-purity, monodisperse silver nanoparticles formulated for unrivalled optical, antimicrobial, and electrical performance.

Produced in our state-of-the-art facilities and offered at competitive prices, it provides the reliability researchers, diagnostic developers, and high-tech manufacturers demand—delivering consistent results from proof-of-concept through full-scale production.

What is Colloidal Silver?

Colloidal silver is a stable suspension of metallic silver nanoparticles (typically 5–100 nm) in an aqueous medium. Its pale-yellow to amber hue arises from size-dependent surface-plasmon resonance (SPR), while controlled Ag⁺ ion release underpins its broad-spectrum antimicrobial activity. Key attributes include:

• Potent antibacterial, antiviral, and antifungal efficacy at low concentrations
• Excellent electrical conductivity for printed electronics and conductive inks
• Ease of surface functionalisation (thiols, amines, carboxyls, antibodies, DNA, polymers)
• High catalytic activity in redox and reduction reactions
• Long-term colloidal stability with minimal aggregation
• Size tunability to match diverse research and industrial requirements

Applications of Colloidal Silver

Ready-to-use aqueous dispersions enable a wide range of solutions:

• Wound-care dressings and antimicrobial textiles
• SERS and other plasmonic biosensors
• Rapid lateral-flow diagnostics and test strips
• Conductive inks, RFID antennas, and low-temperature sintered circuits
• Water-purification membranes with biofilm resistance
• Catalysts for selective reduction and oxidation processes
• Cosmetic formulations and polymer/composite additives

Buy Colloidal Silver Today

Choose from citrate-stabilised 10 nm sols to PVP-capped 80 nm dispersions, supplied in 25 ml to 1000 ml packs or bulk custom volumes. Benefit from competitive pricing, rapid global logistics, and dedicated technical support. Order now and enhance your next breakthrough with Nanografi Silver Dispersion.