屏障系统动物室单向流与乱流空气净化方式的细菌比较分析

目的探讨屏障系统动物室控制微生物污染，维持洁净的方法。方法将屏障系统动物室的乱流空气净化方式进行改进，在乱流室内增加能改变气流方式的无动力的设施，使室内气流改变为单向流动的方式。结果乱流动物室的沉降菌平均为47个，浮游菌平均为154.5个；单向气流动物室内的沉降菌平均为1.5个，浮游菌平均为7个。结论单向流优于乱流。这将为今后我国制定新的实验动物屏障系统环境标准提供技术数据。

A Comparative Analysis of Bacteria Contamination in the Air Cleared by Unidirectional Flow and Turbulent Flow Methods in Laboratory Animal Rooms of Barrier System

Objective To investigate the methods of controlling microorganism contamination and keeping clear in laboratory animal rooms of barrier system. Method To improve the air clearance methods of turbulent air flow in laboratory animal rooms of barrier system by setting non-dynamic facilities which can change the turbulent air flow modality in animal room into unidirectional way. Results In turbulent air rooms the average of bacterial sedimentation was 47, the floating bacteria was 154.5. In unidirectional air rooms the bacterial sedimentation was 1.5 and the floating bacteria was 7. Conclusion The unidirectional air flow is better than turbulent air flow. It will provide technical data for formulating new environmental standards of laboratory animal barrier system in future in our country.