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The ability of the SimPlate method in determining total plate counts and total coliforms was investigated by comparing the conventional method using test strains and food samples. There was no significant difference in the total plate counts between the SimPlate and the conventional methods. In the experiment using heatand high-pressure injured bacteria, the total plate counts determined by the SimPlate method seemed to be slightly higher than those by the conventional method, but there was no significant difference. High correlation between the two methods (r=0.93) was observed in the total plate counts determined using 150 food samples. Furthermore, in the total coliform counts determined using test strains, there was no significant difference between the two methods. When using heatand high-pressure injured bacteria, the total coliform counts determined by the SimPlate method were also slightly higher than those determined by the conventional method. Total coliform counts were determined using 150 food samples, and a high degree of correlation between the two methods (r=0.91) was observed. These findings suggest that the SimPlate method can be effective as a rapid and convenient means for determining total plate counts and total coliform counts. (Received Feb. 27, 2002; Accepted Apr. 21, 2002)

Enumeration of Total Plate Count and Total Coliforms in Type Strain Culture and Foods, by SimPlate and Conventional Methods.