Polystyrene Particle Size Standard Kit ; Flow Cytometry quality ; 2.5E6/ Milliliters ; 6x5 Milliliters ; 2.0 2.4micrometer ; 3.0 3.4micrometer ; 5.0 5.9micrometer ; 7.0 7.9micrometer ; 8.0 12.9micrometer ; & 13.0 17.9micrometer