Abstract: The present invention provides a method utilizing Cylindrical Electrolysis cells for the generation of Hypochlorous Acid (HOCL) solutions having excellent sanitizing properties and a shelf life of 24 months when bottled. The electrolysis cells consist of at least two cylindrical electrodes with at least one cylindrical ion-selective membrane arranged co-axially between them. A cation-selective or anion-selective membrane separates the cathode chamber from the anode chamber allowing only selective ions to move from one chamber to another. A three section end piece facilitate the assembly of the cylindrical electrolysis cell and enables easy inspection and replacement of the ion-selective membranes. The method allows production of different concentrations of Hypochlorous Acid solutions with a pH value ranging from 3.5 to 7.5 and an Redox Oxidation Potential between +700 and +1200 mV when an aqueous sodium chloride or potassium chloride solution is treated.

Abstract: The present invention is an apparatus and method of employing an electrolysis cell assembly for producing simultaneously various diluted Hypochlorous Acid solutions and simultaneously a diluted Sodium Hydroxide solution for usage as cleaning and sanitation by electrolysis of an aqueous saline solution. The apparatus comprising a cylindrical three chamber electrolysis cell consisting of an inner chamber, a middle chamber and an outer chamber having two middle mesh-electrodes in the middle chamber wherein ion-selective exchange membranes are sealed around or on the inside of the middle mesh-electrodes to separate the middle chamber from the inner and outer chamber. The method allows production of different concentrations of Sodium Hydroxide and Hypochlorous Acid solutions isolating a Sodium Hydroxide solution having a negative redox potential ranging from ?600 to ?1200 mV and isolating a diluted Hypochlorous Acid solution having a positive redox potential ranging from +700 to +1200 mV.