Instrument Standards

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Flow Cytometry Count Standards

Polysciences’ Flow Cytometry Count Standards collection offers microsphere suspensions engineered for precise cell enumeration via flow cytometry. For example, the Flow Cytometry Absolute Count Standard™ features highly uniform, ~7-9 µm diameter microspheres internally labeled with a full-spectrum dye and supplied at a verified concentration (~1 × 10⁶ beads/mL).