DIY Colloidal Silver


The Sentient Naturewalker
Staff member
Forget where I got this, just passing along.

  • A power adapter—9–12 volts is ideal, or a 9-volt battery. Higher voltages can be used, but you really need to know what you are doing so you don’t get electrocuted.
  • Electrical wire. One length for the positive and one length for the negative.
  • Distilled water. This is easy to find at your local supermarket. Do not use tap water as it has too many impurities that can harm the process.
  • Pure silver, at least 99% pure. Silver coins are ideal and relatively inexpensive. They are available on eBay, coin dealers, and mints. Silver wire gets results, with some reports that silver solder works also, although it is unknown what the other metals in these alloys might do. Going with a source of pure silver is safest.
  • Small alligator or crocodile clips to hold the silver.
  • A ppm meter.
  1. Make sure the adapter is set at 9–12 volts.
  2. Strip each end of the wires using scissors or wire strippers.
  3. Securely connect the alligator clips to one end of each wire to ensure a good flow of current. Soldering is best.
  4. Fix the wires to the positive (red) and negative (black) terminals on the unplugged adapter or onto the battery.
  5. Put a piece of silver in the jaws of each clip. Don’t touch them together. Fill a glass jar or glass beaker ¾ full with the distilled water. 500ml will easily do two plants.
  6. Suspend each silver/alligator clip combo in the water on opposite sides of the glass.
  7. Plug in and turn on the adapter. If you are using a battery, the process began the moment the electrodes were submersed in the water.
  8. After 20 minutes, remove the electrodes and test with the ppm meter. 15ppm (0.5) and over is the goal. The solution should become a pale gold colour.
  9. When finished, clean the black silver oxide off the silver electrodes and put the kit into storage until next time.
  10. Store the colloidal silver in an amber-tinted bottle in a cool place. It is light and temperature-sensitive. However, don’t put it in the fridge.
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