Countess® Test Beads are designed to help users verify that their Countess® Automated Cell Counter is counting and sizing cells within the expected ranges. Countess® Test Beads are latex beads with a nominal diameter of 10 µm ±10% and are supplied as a suspension containing 1 x 106 beads⁄mL ±10%.

Learn more about the Countess® Automated Cell Counter at www.lifetechnologies.com⁄countess.