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Practical Guidelines for Optimization and Characterization of the Beckman Coulter CytoFLEX™ Platform
Debajit Bhowmick1, Rachael T C Sheridan2, Timothy P Bushnell3
1Metabolism Unit and KI/AZ Integrated Cardio Metabolic Center, Department of Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, SE 171 76, Sweden.
Summary
New guidelines help optimize avalanche photodiode (APD) cytometers like the Beckman Coulter CytoFLEX. These protocols ensure reliable and reproducible data by establishing proper instrument characterization and operational bounds for APD detectors.
Area of Science:
- Flow cytometry instrument characterization and optimization.
- Development of standardized protocols for novel detector technologies.
Background:
- Traditional cytometer characterization relies on photomultiplier tubes (PMTs).
- Emerging avalanche photodiodes (APDs) have different properties than PMTs.
- Existing PMT-based protocols are unsuitable for APD instruments.
Purpose of the Study:
- To evaluate methods for optimizing APD-based cytometers.
- To develop practical guidelines for characterizing the Beckman Coulter CytoFLEX.
Main Methods:
- Tested multiple characterization approaches on three CytoFLEX instruments across two sites.
- Focused on methods suitable for APD detector properties.
Main Results:
- Identified effective strategies for CytoFLEX characterization.
- Demonstrated the need for APD-specific optimization protocols.
Conclusions:
- Proposed easy-to-implement guidelines for CytoFLEX characterization and operation.
- These protocols facilitate consistent and reproducible data generation on APD cytometers.

