Rapid and Accurate Bacterial Counting

Bacteria multiply rapidly, often doubling in 20 minutes or less, making accurate counting a challenge.

Traditional methods like plating are time-consuming and limited in accuracy, while optical density (OD) measurements offer only an approximate concentration range, often failing to capture representative cell counts in dense cultures.


For a fast and precise bacterial count, try CASY. In just 45 seconds, CASY can accurately count up to 50,000 cells, providing a reliable bacterial count with minimal sample preparation.

Two CASY size distributions side by side: E. coli on the left and B. subtilis on the right, both peaking at about 1 µm
Example measurements of E. coli (left) and B. subtilis (right)

Bacteria, analyzed with CASY

Besides E. coli and B. subtilis a large number of other bacteria have already been successfully counted using CASY:

Alphabetical table of bacterial species that have already been counted with CASY, from Acinetobacter baylyi to Yersinia ruckeri

Experience the next level of bacterial quantification. Request a free demo today!

Eliminate the guesswork in bacterial counting. Traditional methods like plating are time-consuming, and optical density (OD) readings lack precision. CASY delivers accurate bacterial counts in just 45 seconds, processing up to 50,000 cells with minimal sample preparation.

Request a Free Demo