Beckman Coulter Z2 Cell and Particle Counter with PC Option. The Beckman Coulter Z2 is the latest cell and particle counter of the Z Series. Following Z1, this model also makes use of the Coulter Principle known as Electrical Sensing Zone Method for counting and sizing cells. Accuracy, speed versatility and reproducibility is expected in the application of this technique. In addition to reporting both count and concentration results, the Beckman Z2 can provide size distribution of the cell population as well. This particle counter also has the ability to display various data between user selectable areas of the graph including the entire size distribution graph as well as the size statistics and counts. Moreover, the cursor positioned on the graph aids in determining the cumulative count and the cumulative number percent above and below a size. Mercury free. Sample result averaging. Size distribution graph and tabular data. PC data acquisition. One button calibration. 100-240V, 1 Ph, 50/60 Hz, CE.