Adjust its water content until the constancy requires about 25 to 35 blows of the Casagrande's liquid limit device to close the groove.Put about 250g of air-dried soil sample through a 425µm sieve into an evaporating dish and mix thoroughly adding enough distilled water to form a uniform paste.Calibrate the drop of the cup, using the end of the grooving tool not meant for cutting, so that there is consistency in the height of the drop.Weigh each of the three moisture cans (W₁).
