Ready-to-use suspensions of 3.0 µm solid latex microspheres in three different concentrations, all excited by violet to blue light sources. These suspensions are recommended for quality control of absolute counting and can be used as references. Count Check Beads can also be used for quality control with standard settings of flow cytometers equipped with 488 nm and 405 nm lasers.

Reagent components:

• 2x 25 mL Count Check Beads - Low, ready-to-use
• 2x 25 mL Count Check Beads - Medium, ready-to-use
• 2x 25 mL Count Check Beads - High, ready-to-use