METHOD OF DETERMINING VALUE OF FALLLING NUMBER Russian patent published in 2017 - IPC G01N33/10 G01N11/10 

FIELD: test equipment.

SUBSTANCE: sample of the ground grain or flour is placed in tubes and filled with distilled water of room temperature, the tubes are closed with rubber stoppers and shaken until a homogeneous suspension is obtained. The resulting suspension in tubes without stoppers is heated in a water bath and stirred with the stock stirrers until the gelatinization. Then the stock stirrers are automatically released and under their own weight they begin to fall down. In this case, the time of fall of the stock stirrers in the test tubes is measured, after which the true falling number is determined by the formula:

,

where FN_tr is the true falling number at the water boiling point 100°C, FN_cur is the falling number obtained at the current water boiling point, t°_cur is the current water boiling point, °C.

EFFECT: higher determination accuracy and reliability.

8 dwg, 6 tbl