A spectrophotometric method for determining the stream sample core diameter of a flow cytometer

Area of Science:

• Analytical Chemistry
• Biotechnology
• Instrumentation Science

Background:

• Accurate determination of flow cytometer stream core diameter is crucial for precise cell analysis.
• Existing methods may be complex, time-consuming, or lack sufficient accuracy.
• Standardization of flow cytometry requires reliable measurement of fluidic parameters.

Purpose of the Study:

• To develop a simple, rapid, and accurate method for determining flow cytometer stream sample core diameters.
• To provide a cost-effective alternative to existing measurement techniques.
• To enhance the reliability of flow cytometry data through precise fluidic characterization.

Main Methods:

• Utilized a precisely formulated potassium dichromate solution as a sample.
• Collected the flow cytometer stream containing the sample.
• Measured the absorbance of the collected sample using a spectrophotometer to determine dilution factor.
• Calculated the sample core diameter based on dilution and stream diameter.

Main Results:

• The described method allows for the determination of flow cytometer stream sample core diameters.
• The technique is both simple and rapid, suitable for routine laboratory use.
• Accuracy is achieved through spectrophotometric measurement of a known tracer solution.

Conclusions:

• This spectrophotometric method offers a reliable approach for measuring flow cytometer stream core diameters.
• The simplicity and speed of the technique make it valuable for flow cytometry calibration and quality control.
• Accurate stream core diameter measurement contributes to improved cell counting and analysis in flow cytometry.