The Beckman Coulter Z2 Particle Counter & Size Analyzer Keyboard Controller is a high-quality laboratory instrument designed for use in biological laboratories. Made by the reputable brand Beckman Coulter in the United States, this device is capable of accurately counting and analyzing particles of various sizes. It is a reliable tool for researchers and professionals in the healthcare, lab, and dental fields who require precise measurements and analysis of particles in their work. With its advanced technology and user-friendly interface, the Z2 Particle Counter & Size Analyzer Keyboard Controller is a valuable asset for any laboratory setting.