The titration accessory is based on a dual syringe Hamilton titrator (ML635) that is connected to the computer by RS232. The accessory comprise of two 1 ml syringes, connecting tubing, a flow cuvette and a light tight feed-through into the FLS980 sample chamber. Titration is controlled through the F980 software. Kinetic measurements with manual or automated titration steps and automated multiple spectral scanning are possible.