What is pycnometer and its function?
A pycnometer is a common science equipment found in laboratories. It is used to measure the density or rather volume of solids. It uses an inert gas such as helium or nitrogen.
What are the advantage of using pycnometer?
The major advantages of the pycnometric method for the determination of density are high accuracy of measurement (to 10-5 g/cm3), the possibility of using small quantities of material (0.5 to 100 cm3), the small area of free surface of the liquid in the pycnometer (which virtually eliminates evaporation of the liquid …
What are the types of pycnometer?
Types Of Pycnometer
- Pycnometers – Vacuum Pycnometer Type F — SG-15.
- Pycnometers – 1500g Budget Pycnometer — SG-17.
- Pycnometers – Vacuum Pycnometer Type F, Calibrated — SG-15C.
- Pycnometers – 2000g Budget Pycnometer 6″ Deep Complete — SG-16A.
What are the parts of pycnometer?
The pycnometer is a glass vessel of a special shape, the lower part 1 of which is spherical, the upper part 2 is also spherical and connected to a vertical cylindrical tube 3, on which there is an annular horizontal mark 4, Between the two parts of the pycnometer 1 and 2, separating it in the diametric in half the …
What is the value of pycnometer?
Results of Pycnometer Test The specific gravity of soil particles will come within the range of 2.65 and 2.85. If the soils consist of porous and organic materials, a specific gravity value of less than 2 will be obtained.
What is the size of pycnometer?
Variable volume pycnometer (or gas comparison pycnometer) consists of either a single or two variable volume chambers. The sample cell volume can be at different types and size, like G-DenPyc 2900 technology specified, the volume can be 0.1ml up to 500ml.
What is the capacity of pycnometer?
Pycnometer is a glass jar of 1-liter capacity that is fitted at its top by a conical cap made of brass.
Who invented pycnometer?
Dmitri MendeleevPycnometer / Inventor
What is the meaning of pycnometer?
The term has its origins in the Greek word πυκνός, meaning “dense”. The density calculated from a volume measured using a gas pycnometer is often referred to as skeletal density, true density or helium density. For non-porous solids a pycnometer can be used to measure particle density.
Is a pycnometer a density measuring device?
While pycnometers (of any type) are recognized as density measuring devices they are in fact devices for measuring volume only. Density is merely calculated as the ratio of mass to volume; mass being invariably measured on a discrete device, usually by weighing.
What is a variable volume pycnometer?
Variable volume pycnometer (or gas comparison pycnometer) consists of either a single or two variable volume chambers. The sample cell volume can be at different types and size, like G-DenPyc 2900 technology specified, the volume can be 0.1ml up to 500ml.
What are the parts of a gas pycnometer?
The simplest type of gas pycnometer (due to its relative lack of moving parts) consists of two chambers, one (with a removable gas-tight lid) to hold the sample and a second chamber of fixed, known (via calibration) internal volume – referred to as the reference volume or added volume.