Are there other evaluation principles used in the titrator?
Four different curves can be observed and evaluated with the corresponding procedures specified in the titration method. Symmetric curve (see answer above) Asmmetric curve (see answer above) Minimum (Maximum) curve: This curve shows the typical profile obtained from turbidimetric titrations, e.g., determination of the anionic surfactant content, where a colloidal precipitate is formed by adding the titrant. This leads to an increased turbidity of the solution. The profile of the curve is characterized by a minimum in the curve which indicates the equivalence point EQP. The precipitate formation is monitored with a photometric sensor, and the light transmission in the solution is measured with a phototrode. At the equivalence point, the turbidity reaches its maximum, i.e. the transmission has a minimum. A special evaluation procedure allows the determination of the minimum of the curve (“MINIMUM”). Curves showing a maximum are evaluated with the procedure “MAXIMUM”. Example: Content det
