The CytoQuant® mobile flow cytometer enables the immediate, on site verification of cleaning procedures in food production facilities or other areas where hygiene is crucial by directly quantifying bacteria and residues on surfaces. CytoQuant® brings the power of flow cytometry to the convenience of a hand-held device. Using impedance fl ow cytometry, CytoQuant® measures bacteria and residue concentrations on surfaces. Separate, precise counts for each are provided in 30 seconds, without the need for pre-treatment, incubation or chemical reagents. CytoQuant® is easy to use and does not require a lab or special training.