Non-aqueous potentiometric acid-base titration
The acid number is a sum parameter for all acidic components; at the same time it is a measure for the long-term stability and corrosiveness of the biofuel. The smaller the value, the higher the quality. Standard EN 14 104 stipulates a non-aqueous potentiometric acid-base titration for determining the acid number. This involves dissolving the sample in a bioethanol/diethyl ether mixture and titrating it with potassium hydroxide dissolved in 2-propanol (1 mol/L). As organic solvents are used, the manual working steps should be reduced to a minimum.
Non-aqueous titrations by Metrohm
With its space-saving Dosino technology the titrator Titrando allows fully automatic and safe solvent addition. The Solvotrode, an excellently shielded combined pH glass electrode, has been specially developed for non-aqueous titrations. The separable ground-joint diaphragm guarantees stable potentials and is easy to clean.
Product information
905 Titrando
900 Touch Control
Solvotrode (pH measurement)
