Sample Foam capacity (%) Foam stability index  (sec) Maximum foam stability  (min)
Mixing time
5 min 10 min 15 min
A 98.01 100.02 103.2 75 63.51
 B 110.20 115.20 118.6 78 68.62
C 120.03 121.4 128.3 98 70.35
A1 *          
A2b 74.31 76.19 78.89 20 3.2
A3*          
Ab 78.01 78.58 81.07 14 2.7
A5*          
A6 78.90 83.80 84.10 120 24
A7 81.65 83.36 83.73 329 56.81
A8*          
A9*          
A10 71.78 76.74 82.04 30 2.23
A11 76.94 78.26 78.42 24 4.45
A12 73.79 76.91 77.40 22 3.28
A13 80.22 83.35 83.78 342 53.45
A14 80.30 83.15 81.68 360 60.58
A15 80.58 81.74 82.55 141 22.32
A16*
*no foaming of samples
Table 6: Foaming properties.