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. Direct quantitative analysis of bacteria and residual particles facilitates proper validation of cleaning and disinfection procedures (IFS7.1). Delivering results within 30 seconds facilitates preventive control and action before production runs. Easy to implement preventive control and take countermeasures before production runs. The testing procedure is simple and requires no laboratory or professional training. Easy data transfer saves, exports and records test results easily.