Form of Silver

• Colloidal silver is composed of approximately 50 to 80 percent silver particles and the balance as silver ions. Biotic silver is composed of silver powder combined with a protein binder.
  
  

Efficacy

• The greater the surface area of the silver particles, the more the product will react with its environment, which, it is believed, is an indicator of how effective the product will be. A greater concentration silver particles, rather than larger silver protein molecules, will increase the product's surface area at equal concentrations.
  
  

Cost

• Biotic silver is simple to manufacture and can even be made at home. Colloidal silver is more complicated to manufacture, and is therefore the finished product more expensive to purchase than biotic silver.