1) Any glass jar
2) Plastic or cardboard top to the jar
3) wires & alligator clips from any hardware store
4) 3-9 volt batteries to make 27 volts
5) Silver wires
It is as simple as that. You must also use distilled water available at the grocery store.
The current limiting diode is optional, but insures high quality Colloidal Silver .
There also are may U-Tube videos to teach you what to do.