电话消毒膜杀菌效果的测定

DETERMINATION OF THE GERMICIDAL EFFICACY OF TELEPHONE DISINFECTION MEMBRANE

公用电话由于接触人员多,极易被污染。目前主要用喷雾或擦抹的方法消毒,费时费药。为改进公用电话的消毒,我们研制出一种使用简便的电话消毒膜(下简称消毒膜),现将结果报告如下。

It was found in an investigation that the bacterial count of public telephone was far higher than that of telephones for office or family use. In order to provide a simple disinfection means, a kind of telephone disinfection membrane was developed. The base membrane conrains silica gel, polyvinyl alcohol, pigment and perfume, and is sprayed with a solution containing chlorhexidine, sodium perboratc and carbamidine. It was found in laboratory experiment that 99.99% of Staphylococcus aureus, Escherichia coli or Pseudomonas aeruginosa was killed after 5 min contact with the membrane. After storage for 540 days at room temperature, the membrane could still kill over 99.9% of these bacteria after contact for 10 min. When the membrane was sticked on the microphone of telephone, it could reduce the number of contaminating bacteria by 96.9%. The membrane has no corrosive action and does not interfere with communication by telephone. In addition to germicidal effect, it also has deodorizing function.