lab-mate

Microbiology calculator

Colony Counter & Dilution Calculator

Calculate total dilution and estimate the concentration of viable microorganisms in your original sample.

Number of colonies

Dilution plated

Volume plated

Number of replicate plates Use the total colonies across all replicate plates.

Sample volume transferred

Diluent volume Use the same unit for both volumes.

Number of identical steps

Results are estimates and should be interpreted according to your laboratory’s validated method and countable-plate criteria.