I. Detje et G. Hildebrandt, Variance of aerobic plate count and Enterobacteriaceae in 17 kinds of deep-frozen food, ARCH LEBENS, 52(1), 2001, pp. 20-22
In 25 samples/lot of 17 different kinds of deep-frozen food the variance of
aerobic plate count and Enterobacteriaceae was determined on the basis of
a hierarchic design. If the content of Enterobacteriaceae went beyond the d
etection line, there was a homogenous distribition. Concerning the aerobic
plate count the standard deviation between the units of some products reach
ed very high values. In these cases a single sample strategy will increase
the probability of false decisions.