The Beckman Coulter Vi-Cell Automated Cell Viability Analyzer automates the widely accepted trypan blue cell exclusion method. 
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Beckman Coulter Z1 Cell and Particle Counter, dual threshold, with keyboard, 100 micron aperture tube and waste/fill station 
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Beckman Coulter Particle Analyzer w/keypad & choice of 50 or 100 micron aperture 
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Coulter Z1 Cell and Particle Counter, single threshold, with keyboard and 100 micron aperture tube 
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