COMPARISON OF GERMICIDAL EFFICACY BETWEEN TWO IODOPHOR DISINFECTION SOLUTIONS

In order to observe the disinfection properties of two iodophor disinfectant solutions,carrier quantitative germicidal test method was used to carry out laboratory study.Results: Povidone-iodine disinfection solution containing available iodine 50 mg/L with a 3 min contact time and polyoxinolum-iodine solution containing available iodine 25 mg/L with a 3 min contact time killed over 99.98% in average of Staphylococcus aureus and Escherichia coli on carriers.Povidone-iodine disinfection solution containing available iodine 100 mg/L with a 5 min contact time and polyoxinolum-iodine disinfection solution containing available iodine 25 mg/L with a 3 min contact time killed over 99.98% in average of Candida albicans on carrier.Povidone-iodine disinfection solution containing available iodine 4800 mg/L with a 120 min contact time killed 89.23% in average of Bacillus subtilis var.niger spores on carrier and polyoxinolum-iodine disinfection solution containing available iodine 5000 mg/L with a 120 min contact time killed 99.84% in average of this bacterial spores.Conclusions: Both of the two iodophor disinfection solutions have good efficacy in killing vegetative forms of bacteria and fungi.The germicidal concentration of povidone-iodine required is two times that of polyoxinolum-iodine.Both of the two iodophor disinfection solutions have weak sporicidal effect.