Salt-free soluble solid content in soy sauce can be obtained by measuring its salinity.

Determination of acid degree of apple vinegar is popularly practiced by potentiometric・・・・

Determination of acid degree of fruit juice is popularly practiced by potentiometric acid-base titration・・・・

Salinity (NaCl) of gravy is determined by titration with 0.1mol/L silver nitrate adfter nitric acid is added to the sample.