Question

What is the maximum purity that can be achieved for a sorted population, and what does it depend on?

Answer

The maximum achievable purity ranges between 99% and 100%.
A purity of 95%–100% can be expected for populations that are well-separated from unwanted cells.

Purity depends on the stability of the sorter and how the sorting gates are set.

For poorly defined regions or “enrichment”-type sorting, purity may drop below 90%.