This adjustable flow splitter is for Post-Column Applications.  You can select the split flow range 1.0 - 20, 10 - 200, 100 - 2,000 nanoliter per minute with a fixed 250 microliter per minute inlet flow. The dead volume on the low flow side is 5 nanoliters for 610-NANO-01, 10 nanoliters for 610-NANO-02, 50 nanoliters for 610-NANO-03. A convenient knob allows the split flow range to be changed by a factor of 20.