Please enter the experimental parameters of your assay below. If you change the minimum dilution, maximum dilution, or number of trials, please press the "Update Data Fields" button.

Number of Cells
Particle to PFU Ratio
Dilution Factor
Log Dilution (10-fold)
Half Log Dilution (101/2-fold)
Quarter Log Dilution (101/4-fold)
Other Dilution
Minimum Dilution Number
Maximum Dilution Number
Number of Trials

For each dilution and trial number, please enter the number of plaques counted. If plaques are too numerous to count, then check the "Uncountable" box. Press "Solve" for the viral particle count estimate and 95% confidence interval.