What is the titration invented by the Danish chemist famous for the concept of pH used for?
Sørensen formol titration:  It is used in the determination of protein content in samples. S. P. L. Sørensen: Søren Peder Lauritz Sørensen (9 January 1868 – 12 February 1939) was a Danish chemist, famous for the introduction of the concept of pH, a scale for measuring acidity and alkalinity.
i don't know