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. 1999 Jan;65(1):355–357. doi: 10.1128/aem.65.1.355-357.1999

TABLE 2.

Impact of dispersion of samples on CFU counts of unchlorinated and chlorinated suspensions of particle-attached Sphingomonas cells

Samples Avg no. of CFU g−1 (SD)a
With no dispersion of attached bacteria by sonication After sonication of samplesb
Unchlorinated 3.7 × 104 (4.0 × 104) 2.0 × 107 (0.74 × 107)
Chlorinated 1.3 × 101 (1.4 × 101) 8.3 × 103 (3.7 × 103)
a

Each value in parentheses indicates the standard deviation of three replicates. 

b

Sonication was performed just before pour plating of the samples.