Selection of injected sample volumes is a powerful tool for the optimization of all FIA techniques. since It allows:
- Selection of sensitivity and detection limit (as shown here on the spectrophotometry of a dye)
- Verification of the linear range of a detector at different wavelenghts.
- Automated dilution of sample material
Volume of a sample solution injected into an FI system is accomplished by manually changing the volume of the sample loop; in SI systems, injected sample volume is controlled by software.