The Beckman Z2 particle counter has the ability to provide size distribution of the cell population. The Z2 cell counter uses the electrical sensing zone method of counting and sizing of cells. This method provides speed, accuracy, versatility and reproducibility. The Beckman Z-2 displays the entire size distribution graph, or size of statistics and counts between user selectable areas of the graph. In addition, this system displays the cumlative count and the cumlative number % above and below a size determined by the cursor positioned on the graph. The Beckman Coulter Z2 Cell and Particle Counter has the ability to average counts and channelized data from a series of up to 10 consecutive analyses. The more cells counted and sized the greater the statistical confidence in the result and the smoother the shape of the averaged size distribution. Key Features include Mercury Free, Small Footprint, On Button Calibration, Sample Result Averaging, Size Distribution Graph and Tabular Data, Data Acquisition To The PC via Windows Based Software, Storage of Up To 5 Instrument Settings for Different Cell Lines. Includes Beckman Z2, Keyboard, choice of Aperture, Pentium IV data station running Accucomp software, all required cables, operator’s guide and Harlow Scientific standard warranty.