- PSU +ve (red) connected to ammeter, then to Silver anode. PSU -ve connected to cathode rod.
Anode = Silver = POSITIVE; Cathode = copper = NEGATIVE.
Brass rod as cathode, Silver anode in croc clip.
Various sizes of reaction vessel from 0.25 ltr to 7 ltr. All are cafetieres except the 7 ltr which is from a flower-arranging shop. Stirrer, water TDS meter and thermometer are not essential.