制剂室配料间、洁净间是配制、灌装灭菌制剂的重要场所，倘若消毒处理不当，势必影响灭菌制剂的质量。笔者从1992年使用过氧乙酸对灭菌制剂室配料间、洁净间进行消毒处理，其灭菌率均达到100％。现将过氧乙酸制备和使用方法介绍如下。1过氧乙酸的制备取冰醋酸140ml与硫酸7．1ml Preparation room ingredients, clean room preparation, filling an important place for sterilization preparations, if disinfection properly, it will inevitably affect the quality of sterilization preparations. From 1992, the author used peracetic acid to sterilize the ingredients of the preparation room and the clean room of the preparation room, and the sterilization rate of them reached 100%. Peracetic acid preparation and use of the method are as follows. Preparation of peracetic acid Take glacial acetic acid 140ml and sulfuric acid 7.1ml