Sample no.

sodium carbonate

Sand

Silt

Clay

1

6%

5.6%

28.84%

65.56%

2

4.5%

2.29%

23.58%

74.13%

3

3%

6.39%

39.98%

53.63%

4

1.5%

0.67%

31.21%

68.12%

5

Standard sample

2.41%

31.30%

66.29%