to the derusting removal of corrosion products from ferrous materials including intricate components and inaccessible parts as a means of surface preparation prior to surface treatment of the material the electrolyte is the major constituent of the process the disposal of the seawater does not pose a problem since there is very little variation in the ph thereof also the electrolyte can be reused after making suitable changes in the solution chemistry seawater drawn from the sea is filtered to remove dust dirt and turbidity the clear natural seawater is transferred to a 25 liter capacity pvc tank the ph of the electrolyte is measured using a high precision digital ph meter prior to the commencement of the experiments the ph of the electrolyte was observed to be in the range of 7 9 to 8 2 prior to the immersion of the corroded steel specimen test specimen in the experimental tank the surface of the specimen is cleaned with a bristle brush to remove loosely adherent corrosion products the test specimen is made the cathode and a more noble metal stainless steel u2212 304 than the test specimen is made the anode in order to complete the circuit the bath is stirred with an electrical stirrer during the process of cathodic cleaning to maintain uniformity of the bath in terms of ph temperature.