Mack Fulwyler - sorter 1965 - electronic cell volume 1965 - at Los Alamos National Labs - this instrument separated cells based on electronic cell volume (same principle as the Coulter counter) and used electrostatic deflection to sort. The cells sorted were RBC because they observed a bimodal distribution of cell volume when counting cells - the sorting principle was based on that developed for the inkjet printer by Richard Sweet at Stanford in 1965.
After determining that the bimodal distribution was artifactual, this group were able to sort neutrophils and lymphocytes from blood.
