Physical Methods are those where sophisticated equipment is used for determining quality of flour. These include:
i.) Amylograph which measures alpha-amylase activity
ii). Farinograph measures strength of flour for commercial mixing operation.
iii). Extensograph indicates the loaf volume potentialities.
iv). MacMicheal viscosimeter indicates the amount of bleaching that flour has undergone. Bleaching incidentally weakens proteins.
v). PH value indicates the acidity or alkalinity.