OBSERVATION ON DISINFECTION-RELATED PROPERTIES OF COMPOUND TRICHLOROISOCYANURIC ACID POWDER

Objective To know the germicidal efficacy of compound trichloroisocyanuric acid powder and the factors influencing its germicidal efficacy.Method Carrier quantitative germicidal test was used to carry out laboratory observation.Results The average killing rates of Escherichia coli and Staphylococcus aureus exposed to the water solution of the compound trichloroisocyanuric acid containing available chlorine 50 mg/L for 5 min attained over 99.90%.The average killing rate of Candida albicans exposed to the disinfection solution containing available chlorine 500 mg/L for 5 min attained 100% and that of spores of Bacillus subtilis var.niger exposed to the water solution of the compound trichloroisocyanuric acid containing available chlorine 800 mg/L for 15 min attained 100%.25%(v/v) calf serum in the bacterial suspension had significant influence on the germicidal efficacy of trichloroisocyanuric acid.Conclusion Compound trichloroisocyanuric acid powder has relatively strong killing effect on vegetative forms of bacteria,fungi and bacterial spores on carriers,but it is influenced significantly by the organic substance.