细菌总数是饮料、水质等卫生细菌学的检测项目之一。以往一般用普通营养琼脂倾注培养。但此法有时对部分菌落难以分辨、观察与计数,从而影响检测结果.近年来,根据开封市卫生防疫站阎倬云同志提示的TTC指示菌落法,笔者用加入TTC的 The total number of bacteria is one of the health bacteriology test items such as beverages and water quality. In the past generally used ordinary nutrient agar pour culture. However, this method is sometimes difficult to distinguish part of colonies, observation and counting, thus affecting the test results.In recent years, according to the Yankee City Health and Anti-epidemic Station Comrades suggested by the TTC instructions colony method, I use to join the TTC