Cytek (Fremont, California, 510-657-0102) sells a "Time Zero" system that is
supposed to delivery activated cells to the laser intercept within one second
and works on the Vantage and Elite. I have not used it, but it is worth looking
at. Also, the Los Alamos group published on sub-second flow cytometry in
Cytometry. 21(3):223-9, 1995 Nov 1.
Tony Bakke