EXPERIMENTAL STUDY ON GERMICIDAL EFFICACY OF A POVIDONE IODINE DISINFECTION SOLUTION

Objective To know the efficacy of a povidone iodine disinfection solution in killing different microorganisms.Method Suspension quantitative germicidal test was used to carry out laboratory observation. Results The killing logarithm values of Staphylococcus aureus exposed to the disinfection solution containing available iodine 100 mg/L for 5 min and Pseudomonas aeruginosa exposed for 7 min were 7.00.The killing logarithm value of Candida albicans exposed to the disinfection solution containing available iodine 50 mg/L for 1 min was 6.00,that of poliovirus exposed to the disinfection solution containing available iodine 500 mg/L for 60 min was 4.00 and that of E.coliphage F2 exposed to the disinfection solution containing available iodine 4640 mg/L for 4 h was 3.11. Conclusion The iodophor disinfection solution has good efficacy in killing vegetative forms of bacteria and fungi,but its efficacy in inactivating poliovirus and F2 coliphage is significantly not as good as in killing bacteria.