Methods: The original concentration of glutaraldehyde was assessed by iodometric method in Preparation Room and indicator card of 3M company in Infective Room.

• 方法:制剂室用碘量法测定每批戊二醛的初始浓度共8次,感染科和胃镜室用戊二醛浓度指示卡测试使用中戊二醛浓度263次。