FIG. 2.

Photograph and schematic of capillary assembly showing the stainless-steel plunger (A), septum (B), sheath (C), HPLC fitting that holds the capillary and screws into the steel block (D), viton o-ring (E), and open mouth of the capillary that is inserted into the flowing bacterial suspension (F). The outside and inside diameters of the capillary are 1.0 and 0.5 mm, respectively. In the photograph, the sheath is omitted for clarity and the plunger is shown pushed all the way to the mouth of the capillary.