OBSERVATION ON THE INFLUENCING FACTORS TO THE STABILITY OF ELECTROLYZED OXIDIZING WATER

Objective To observe the germicidal efficacy of electrolyzed oxidizing water(EOW) and the influencing factors on its stability.Methods Suspension quantitative germicidal test and physical-chemical experiment were carried out in the laboratory.Results The new made EOW killed more than 99.999% Staphylococcus aureus with 20 s contacting time.After EOW was stored for 4 days in setup full vessels with 4 methods,ORP and pH value did not change.The available chlorine decreased by 15.30%.In the same condition in half-full vessels,ORP and pH value changed obviously.The available chlorine decreased for 56.28%.In full vessels,germicidal efficacy was influenced by shaking and lighting condition.In half-full vessels,the storing condition affected the germicidal efficacy obviously.Conclusions The physical-chemical performance of EOW did not change obviously for 4 days either in dark or in light.But in the half-full vessels storing condition influenced germicidal efficacy obviously.