For sand correction of aggregates using 5g/L sodium hexameta phosphate, how long is shaking to be continued?

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Dilip Kumar Pal

This is a method generally followed in rapid soil survey and always overestimates the sand and silt particles and underestimates the clay even if the shaking is done for > 3 hours.It will be better to follow the international pipette method after removal of OC,CaCO3 and Fe-oxides. Sand, silt and clay fractions then are separated by the size segregation procedure of Jackson (1979).

Nazir Hussain

The answers of Dilip Kumar and Hani Antoun are appreciable and can guide Ghosh in solving his problem.