The German Schutt company's colony counter is a sophisticated device which can perform fast analysis ? in petri-dish or wherever germ colonies grow. The criteria for the test can be color, shape or size (or a combination of the three criteria) and the result received is the number of colonies on the plate (up to thousands of colonies). The measuring principle is microscope + computer program, which very rapidly and accurately analyses the state of the plate. The results can be exported to a laboratory computer the data saved on a regular Excel program.