COMPARISON OF DIFFERENT TEST METHODS TO BACTERICIDAL EFFICACY OF ACIDIC ELECTROLYZED OXIDIZING WATER

Objective To compare the bactericidal efficacy of acidic electrolyzed oxidizing water by different test methods.Method Suspension quantitative germicidal test,flowing soak germicidal test,and carrier quantitative germicidal test were compared in the laboratory.Result The killing logarithm values of Staphylococcus aureus,Escherichia coli,and Candida albicans exposed to acidic electrolyzed oxidizing water for 0.5 min were 5.00,5.00,4.00 respectively,and that of spores of Bacillus subtilis var.niger exposed to it for 10min,were also 3.00 by suspension quantitative germicidal test.When the flowing soak germicidal test was taken,the killing efficacies of all tested microorganisms to acidic electrolyzed oxidizing water were as good as former tests.By carrier quantitative germicidal test,the average killing rate of S.aureus,spores of B.subtilis var.niger were also 3.00,while they exposed to acidic electrolyzed oxidizing water for 1.0 min and 10 min respectively.Conclusion The acidic electrolyzed oxidizing water has a good germicidal efficacy,when it's in enough concentration and clean environment conditions.