What Are They?
Silver nanoparticles are increasingly being used in a number of products. Nanoparticles are extremely small units of a substance. Generally, nanoparticles can be 1000 times smaller than the width of a human hair. However, there is currently no scientific consensus on the precise size of a nanoparticle. The European Union defines nanomaterials as between 1 and 100 nanometers (along with some other defining features), but a number of organizations recommend that the definition for food ingredients be 500 nanometers and below.