EXPERIMENTAL OBSERVATION ON GERMICIDAL EFFICACY AND TOXICITY OF ELECTROLYZED OXIDIZING WATER

In order to know the disinfection property of electrolyzed oxidizing water(EOW) produced by special electrolysis production machine,mobile carrier immersion germicidal test and animal test were used to carry out oxperimental observation on its germicidal efficacy and toxicity.Results: The average killing logarithms of Candida albicans exposed to the stock solution of EOW produced by Lian-Bang Brand EOW production machine for 4 min and spores of Bacillus subtilis var.niger exposed for 10 min were ≥3.00.The average killing logarithms of Staphylococcus aureus,Escherichia coli and Pseudomonas aeruginosa exposed to 50%(v/v) EOW for 2 min were ≥3.00.In mouse acute oral toxicity test,the EOW was found to be practically nontoxic.It was non-irritating to rabbit skin and mucous membrane and did not cause micronucleus formation of mouse polychromatic erythrocytes.Immersion in the stock solution of the EOW for 72 h caused moderate corrosion of carbon steel,slight corrosion of aluminum and essentially no corrosion of stainless steel and copper.Conclusions: The EOW has good germicidal ability.It belongs to non-toxic substance.It is non-irritating to skin and mucous membrane and causes certain corrosion of metals.