decrease: 3 564 866 cells/mL
= approximately 99.96 % of amount added to water

Sample B: Arrowhead
average #cells/mL prior to inoculation: 6150
average #cells/mL at 0 minutes: 2 340 000
average #cells/mL at 72 hours: 1400

decrease: 2 332 450 cells/mL
= approximately 99.68% of amount added to water

Sample C: Control
average #cells/mL prior to inoculation: 1300
average #cells/mL at 0 minutes: 2 480 000
average #cells/mL at 72 hours: 33

amount decrease: 2 478 700 cells/mL
= approximately 99.99% of amount added to water