The Beckman Coulter Z1 is a particle counter specifically designed to produce quality outputs through simple operation. It is specifically designed to produce quality outputs through simple operation. Accurate results can be viewed within seconds after entering a diameter or volume as the cell size value. Clear messages displayed on the LCD help operators understand set-up procedures and analyses functions. Optimum instrument settings can be automatically computed in just a few steps during calibration. This model is also capable of solving common problems found in other instruments including calibration drifts caused by changes in electrolyte conductivity and temperature.