Quick Answer: Why Is The Specific Gravity Important?

What does a specific gravity of 1.020 mean?

Urine specific gravity is a measure of the ratio of the density of urine to the density of water.

Urine specific-gravity measurements normally range from 1.002 to 1.030.


The NCAA selected a urine specific-gravity measurement of ≤1.020 to indicate euhydration.


How do you use a specific gravity bottle?

How to Use a Density BottleDetermine the weight of the dry and empty density bottle.Fill the density bottle with liquid, avoiding bubbles. … In a thermostatic bath, adjust the temperature of the bottle and contents to 20 °C.Align the stopper respectively, the thermometer of the density bottle according to the marking, and insert carefully.More items…

Why is specific gravity test done for cement?

The cement particles have pores or particles that can contain water within it. A nominal mix is prepared with a cement of specific gravity 3.15. Any change in this value of specific gravity will affect the mix design. Hence, it is necessary to test the specific gravity of the cement procured before mixing process.

How does specific gravity work?

The specific gravity of an object is the ratio between the density of an object to a reference liquid. … The specific gravity has no units. If the specific gravity has a value of greater than one, then the object sinks in water and if it is less than one, then the object floats in water.

What is called specific gravity?

Specific gravity, also called relative density, ratio of the density of a substance to that of a standard substance.

What is water’s specific gravity?

Because water at 4 degrees Celsius is the standard scientists use to determine specific gravity, it follows that its specific gravity is 1.

What are the factors affecting specific gravity test?

Specific gravity varies with temperature and pressure; reference and sample must be compared at the same temperature and pressure or be corrected to a standard reference temperature and pressure. Substances with a specific gravity of 1 are neutrally buoyant in water.

Why is specific gravity important in pharmacy?

Specific gravity can be an indicator of that (in concert with assay testing and other attributes) Some manufacturing processes can result in an aerated product, which requires you to remove the air by placing the product under vacuum. A specific gravity reading will tell you if you have done this sufficiently.

What is specific gravity and why is it important?

4.1 Specific gravity is an important property of fluids being related to density and viscosity. Knowing the specific gravity will allow determination of a fluid’s characteristics compared to a standard, usually water, at a specified temperature.

How do you determine specific gravity?

To determine the specific gravity of a mineral, you simply take a sample of ore of known size and put it into a volume of water. Weigh the water that was displaced by the mineral. This will give you the ratio between the mineral and the water.

How does temperature affect specific gravity?

Can temperature affect specific gravity? Yes, it can. When using water as a reference for establishing specific gravity, it is almost always assumed that the water is at 4°C, when it’s densest. … Water itself becomes less dense as it becomes warmer until it evaporates and becomes steam vapor at boiling point.

What does specific gravity tell us?

Urinary specific gravity (SG) is a measure of the concentration of solutes in the urine. It measures the ratio of urine density compared with water density and provides information on the kidney’s ability to concentrate urine. A urinary specific gravity measurement is a routine part of urinalysis.

What is the use of specific gravity bottle?

Specific gravity bottles determine liquid densities by measuring the difference between an empty and filled bottle and dividing by an equal volume of water to find the specific gravity of the substance. These bottles are also known as a density bottle or relative-density bottles.

What is difference between density and specific gravity?

Density is defined as mass per unit volume. It has the SI unit kg m-3 or kg/m3 and is an absolute quantity. Specific gravity is the ratio of a material’s density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m-3). It is therefore a relative quantity with no units.