Direct Measurements of Microbial Growth Plate Counts:Perform serial dilutions of a sample 1 ml 1 ml 1 ml 1 ml 1 ml Original 9 ml broth inoculum in each tube Dilutions 1:10 1:100 1:1000 1:10,000 1:100,000 Figure 6.15,top portion• Plate Counts: Perform serial dilutions of a sample Direct Measurements of Microbial Growth Figure 6.15, top portion