Fluid resistor technology eliminates adjustments to capillary tubing for optimizing split ratio. Wide range of interchangeable resistors available. Split ratio not affected by changes in viscosity or. ASI has developed a new design of Adjustable Flow Splitter, which is the 610 series. The 610 series splitters provide ASI customers with extended dynamic range, precise split setting and reduced dead volume. High operating. Analytical Sales and Services Flow Splitters are available with Fixed or Adjustable split ratios where a controlled, reproducible split ratio is required including LC/MS, flow fractionation, pre/post column flow splitting, mass directed fraction collection, and capillary chromatography.