23 ppm Ultra-fine [Ag(n)1+] Dispersion Particle Diffusion Coefficient = 10-5cm2/second Dietary Supplement Immune SupportArgentyn 23 Professional Bio-Active Silver Hydrosol delivers advantages no other manufacturer can match:Actively Charged: 96% positively charged silver particles [Ag(n)1+].Easily Absorbed: Unprecedented particle size of 0.8 nanometers allows for easy absorption and excretion.Less is More: Ultra-small particle size results in greater surface area, making our low concentration of 23 ppm more effective than brands up to 1000 ppm.Perfectly Safe: Safe for the whole family.