CountBright™ Absolute Counting Beads, for flow cytometry

Catalog number: C36950

Molecular Probes™  Related applications: Cell Viability, Proliferation & Function | Flow Cytometry

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CountBright™ absolute counting beads are a calibrated suspension of microspheres that are brightly fluorescent across a wide range of excitation and emission wavelengths (UV to 635 nm excitation and 385-800 nm emission). CountBright™ absolute counting beads are mixed with the cell sample and assayed via flow cytometry. By comparing the ratio of bead events to cell events, absolute numbers of cells in the sample can be calculated. Because CountBright™ beads are mixed in the test sample, absolute cell counts using this single-platform method are more accurate and less complicated than cell concentration determined using multiple-platform testing. CountBright™ absolute counting beads can be used with any sample type, including no-wash/lysed whole blood.

View information about all flow cytometry cell counting beads.
For Research Use Only. Not for use in diagnostic procedures.


Bead Diameter: 7 µm
Number of Reactions: 100
Flow Cytometer Laser Lines: any lasers (UV to 633/635)
Form: Solution
Format: Tube(s)
Product Size: 5 mL
Emission (nm): 385-800
Excitation (nm): 635
Calibration Type: Flow Cytometry Cell Counting Beads
Detection Method: Fluorescent
Diameter (Metric): 7 µm
For Use With (Equipment): Flow Cytometer
Shipping Condition: Room Temperature

Contents & storage

Contains 1 bottle of CountBright™ absolute counting beads (5 mL).

Store in refrigerator (2–8°C) and protect from light.


Manuals & protocols

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