Defoaming ability coefficient

A coefficient of defoaming ability KH has been proposed as a qualitative characteristics. It represents the ratio between the height of the foam column, that is produced... 

A comparison of the defoaming ability of six different compounds using the above three tests under standard conditions showed a good correlation between coefficients Kh, K h and Kf. 

Defoaming ability of antifoams with different spreading coefficients in OP-10 and sulphonol foaming systems... 

Foam inhibition is evaluated by the following procedure a definite quantity of the antifoam is added (usually - 0.1 cm3) to the foaming solution (100 cm3). Solid and paste-like antifoams are introduced as solutions. The time needed to fill up the foam vessel as well as the average foam lifetime with Tm and xam, respectively, with and without antifoams, are measured. It is convenient to express the foam inhibition ability either as the relative stability Tre[ (Eq. (9.2)) or as the defoaming coefficient [16]... 

---