Magnesium anodes are the most widely used material for the application of cathodic protection on underground tanks and pipelines. Each anode is protected by backfill material consisting of 75% gypsum, 20% bentonite and 5% sodium sulfate.

17# Anode with 10' Lead.

Isolates underground tank to complete cathodic protection.

This copper-sulphate reference electrode is a low cost, easy-to-use device for measuring current on a cathodic protection system. Simply attach one lead from a digital multimeter to the tank or pipe, the other lead to the electrode and take readings at different points on the ground around the tank or pipe.