This generator uses only .9999 pure silver electrodes and distilled water to produce the purest product available. The generator comes with all of the following: Pure .9999 silver electrodes. Complete directions for set-up and production. Batteries. We have the best eMail and telephone support available in the industry. We don't leave you alone to find out for yourself. We are there for you if you need us although the instructions as well as the simplicity of the machine itself insure your success in its operation. At $39, we have broken the price barrier for colloidal silver generators and made colloidal silver truly an affordable solution for many of your health needs. All you need to get started producing quality colloidal silver is the generator for $39. However, the whole set-up for production, testing, storage and application can be bought as a package. You save $5.00 off the items priced separately. Go to the Accessories page for complete details.