电话消毒膜杀菌效果的测定

<正> 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。

DETERMINATION OF THE GERMICIDAL EFFICACY OF TELEPHONE DISINFECTION MEMBRANE

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.