pycnometer

Nor does depend on the actual volume of the pycnometer.

A gas pycnometer can be used to measure the volume of a powder sample.

The pycnometer is more likely to give an accurate reading for a fibrous material.

The following illustration involving the use of the pycnometer is instructive.

Specific gravity of rocks is determined by use of a balance and pycnometer.

Pycnometer is the preferred spelling in modern American English usage.

A pycnometer is simply a bottle which can be precisely filled to a specific, but not necessarily accurately known volume, .

The Pycnometer is then filled with a fluid of known density, in which the powder is not soluble.

The powder is added to the pycnometer, which is then weighed, giving the weight of the powder sample.

Specific gravity is measured by a hydrometer, pycnometer or oscillating U-tube electronic meter.

The pycnometer measures the mass and the volume of the specimen directly; this method gave a value of 3.66 to 3.82 for todorokite.

A gas pycnometer is also sometimes referred to as a helium pycnometer.

There is also a gas-based manifestation of a pycnometer known as a gas pycnometer.

The particle density of a powder, to which the usual method of weighing cannot be applied, can also be determined with a pycnometer.

Gas expansion pycnometer is also known as constant volume gas pycnometer.

The working equation of a gas pycnometer wherein the sample chamber is pressurized first is as follows:

Derivation of the "working equation" and a schematic illustration of such a gas expansion pycnometer is given by Lowell et al..

A pycnometer is usually made of glass, with a close-fitting ground glass stopper with a capillary tube through it, so that air bubbles may escape from the apparatus.

Variable volume pycnometer (or gas comparison pycnometer) consists of either a single or two variable volume chambers.

Or do you have to determine several properties (such as density, with a pycnometer) and dielectric constant, and then use an equation - if so, are there simplifying assumptions that you make?

As specific gravity was the basis for the Balling, Brix and Plato tables dissolved sugar content was originally estimated by measurement of specific gravity using a hydrometer or pycnometer.

The volume of the powder is determined by the difference between the volume as shown by the pycnometer, and the volume of liquid added (i.e. the volume of air displaced).

A common laboratory device for measuring fluid density is a pycnometer; a related device for measuring the absolute density of a solid is a gas pycnometer.

The density calculated from the volume measured by a gas pycnometer is often referred to as skeletal density, true density or helium density and sometimes as particle density for non-porous solids.

The volume measured in a gas pycnometer is that amount of three-dimensional space which is inaccessible to the gas used, i.e. that volume within the sample chamber from which the gas is excluded.