Nano colloidal silver <20nm 100ppm-10000ppm  Concentration: 100ppm to 10000ppm and can be customized Particle size: <20nm, also can be customized Silver purity: 99.99% Solvent: deionized water or other organic solvent Package: 100ml / bottle, 500ml / bottle, 1L / drums etc, we can also pack it as needed. Features: safe, environmentally friendly, non – toxic, tasteless, convenient to use. Customize service for special particle size, dispersion, coating, etc are available, welcome to inquiry. Silver nanoparticles are well known for their antimicrobial properties. It can be used as an antibacterial and disinfectant. Addition of very small amounts of silver nanopowder (~0,1%) into different inorganic matrises makes those materials effective for killing pathogenic microorganisms like Escherichia Coli, Staphylococcus Aurous, etc. In addition to the silver colloids, there are nano silver powders to supply. Our packing is as follows: