What does pycnometer mean?
What does pycnometer mean?
: a standard vessel for measuring and comparing the densities of liquids or solids.
What is a pycnometer in chemistry?
(pɪkˈnɒmɪtə) n. (Chemistry) a small glass bottle of known volume for determining the relative density of liquids and solids by weighing. Also: pyknometer.
What is a pycnometer specific gravity?
To determine the specific gravity of soil solids by Pycnometer bottle method. Specific gravity is the ratio of the mass of unit volume of soil at a stated temperature to the mass of the same volume of gas-free distilled water at a stated temperature.
What means specific gravity?
Specific gravity, also called relative density, ratio of the density of a substance to that of a standard substance. Because it is the ratio of two quantities that have the same dimensions (mass per unit volume), specific gravity has no dimension.
How does a gas pycnometer work?
A gas pycnometer operates by detecting the pressure change resulting from displacement of gas by a solid object. Expanding a quantity of gas at known pressure into an empty chamber and measuring the pressure establishes a baseline. Then a sample is placed in the chamber and the chamber is resealed.
What is the principle of pycnometer?
A pycnometer allows measuring the volume and the density of solid objects in a non-destructive manner. The latter is accomplished by employing Archimedes’ principle of fluid displacement and Boyle’s law of volume-pressure relationships, respectively, for liquid and gas pycnometers (Tamari and Aguilar-Chavez, 2005).
How do you determine specific gravity?
The density is directly related to the mass of the object (unit: usually in grams but can be measured in kilograms or pounds), so the specific gravity can also be determined by dividing the mass of the object by the mass of the water.
How does a pycnometer work?
It uses a working liquid with well-known density, such as water. The pycnometer is a glass flask with a close-fitting ground glass stopper with a capillary hole through it. Then, liquid is added and the solid weight from the total measured weight is determined. The volume of added water can then be obtained.