Disclosed herein is a flow cell having an endless loop manifold. The flow
cell includes at least two inlet channels. The inlet channels are each connectable
with a reservoir and controllable by means of valves. The inlet channels end in
an inlet chamber. Each of two ends of the inlet chamber is connected with a discharge
channel by means of outlet channels. Old fluid remaining in the inlet chamber is
displaced into the discharge channel by newly supplied fluid. Dead time waiting
until the old fluid has been displaced by the pure new fluid is minimal.
