上游充通大睾 Shanghai Jiao Tong University 命66原 ARTEK COUNTER 2y0 CC (a) (b) Figure 6.5 Equipment for Counting Bacterial Colonies.(a)The Quebec colony counter.The counter illuminates the petri plate uniformly from the side,and the plate is magnified for easier counting of small colonies.In this sophisticated model an electric probe is touched to each colony to record the count.(b)An automated counter.The camera forms an enlarged image of the plate:all objects of the desired size range in any part of the image are counted by the instrument.The counter may be connected to a separate computer. 陈峰，上海交通大学生命学院微生物学Shanghai Jiao Tong University 陈峰，上海交通大学生命学院微生物学