Karl Fischer TitrationThe Karl Fisher titration is the industry standard when quantifying the amount of water in a sample. This technique has the capacity to handle a wide range of water concentrations, whether your sample contains 100 ppm or 100% water. This method involves combining the sample with the anode solution, composed of an alcohol, base, SO2 and I2. A second compartment contains a cathode immersed in the anode solution. Current driven into the Pt anode produced I2, which reacts stoichiometrically with water. Once I2 is formed in excess, a voltage drop between the Pt anode and a second Pt electrode signifies the end-point of the titration. Water concentrations can also be determined volumetrically by using the anode solution as the titrant.
- Quick and selective water determination
- High accuracy and precision
- Works with most sample types