Bio-Rad Quantity One 1-D Analysis Software - Manual (Page 192)

8-1
8. Colony Counting
You can use Quantity One to automatically count the number of white, blue, or plaque
colonies in a Petri dish.
Note: For best results, when capturing the image of a Petri dish, the dish should fill the
imaging window. Also, images with colonies should not have asymmetric pixels.
(Asymmetric pixels can be generated by densitometers and the Reduce File Size
command.) The colony counting function will not work properly on images with
asymmetric pixels.
Select Colony Counting from the Analysis menu to open the Colony Counting
dialog.
Fig. 8-1. Colony Counting dialog.