What is physiological buffer used in flow cytometer called as?

What is physiological buffer used in flow cytometer called as? Correct Answer Sheath fluid

The most important part of using a flow cytometer lies in the fluid that is involved which acts as a physiological buffer. One such buffer used is the sheath fluid. This fluid is at its perfect viscosity in order to direct the cells and maintain their movement in the cytometer. The cell that has to be studied is surrounded completely by this sheath fluid.  

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Which of the following is NOT a component of flow cytometer?