The DW RE-5C Electrode Kit includes:
(1) Waterproof carrying case;
(1) RE-5C portable electrode;
(1) Ceramic conical plug for RE-5C;
(1) Bottle of deionised water (236ml)
(1) Bottle of copper sulphate crystals (177ml)
(4) O-Rings
(1) Green Non-metallic Sandpaper
Useful Links:
Article on Cathodic Protection
