The membrane Chlor-Alkali is basically produced from purified Sodium Chloride. The trouble free production of Chlorine and Caustic Soda heavily relies on the quality of salt. The demand for quality salt has been considerably increased by the introduction of membrane technology into the Chlor-Alkali Electrolysis. The life of the membrane cells is determined by the quality of salt used as raw material. On the contrary, the consumption of electricity is dependent on the level of impurities in the salt.