Weigh the specific gravity bottle dry. Let the mass of the empty bottle be W1.
Fill the bottle with distilled water and weigh. Let the mass be W2.
Wipe dry the specific gravity bottle and fill it with kerosene and weigh. Let this mass be W3.
Pour some of the kerosene out and introduce a weighed quantity of cement, W5 (about 50 g) into the bottle. Roll the bottle gently in an inclined position until no further air bubbles rise to the surface. Fill the bottle to the top with kerosene and weigh it. Let this mass be W4.
From these data, calculate the specific gravity of the cement, S.
Dry the flask carefully and fill with kerosene or Naphtha to a point on the stem between zero and 1 ml.
Dry the inside of the flask above the level of the liquid.
Immerse the flask in a constant temperature water bath maintained at room temperature for a sufficient period before taking any reading so as to avoid variation greater than0.2°C in the temperature of the liquid in the flask.
Record the level of the liquid in the flask as initial reading, V1.
Place a weighed quantity of cement, W1 (about 60 g) into the flask so that the level of kerosene rises to about say 22 ml mark. Care is taken to avoid splashing and to see that cement does not adhere to the sides of the flask above the liquid.
After putting all the cement into a flask, insert the nipple and roll the flask gently in an inclined position to free the cement from the air until no further air bubble rises to the surface of the liquid.
Keep the flask back in a constant temperature water bath and note down the new liquid level as final reading, V2.
Oil well cement: Oil well cement is designed specifically for use in oil and gas well construction. It typically has a lower specific gravity compared to regular cement, ranging from 1.8 to 2.2.
Lightweight cement: Lightweight cement is used in applications where a reduced weight of the concrete is desired. It incorporates lightweight aggregates such as expanded shale, clay, or slate to achieve a lower specific gravity, typically ranging from 1.2 to 2.0.
Aerated cement: Aerated cement, also known as cellular concrete or foamed concrete, is a lightweight and highly insulating material. It is produced by introducing air or gas bubbles into a cement-based mixture. The specific gravity of aerated cement can vary depending on the density of the foam, but it generally falls within the range of 0.2 to 1.0.