We continue to develop resources related to the COVID-19 pandemic. See COVID-19 initiatives on Appropedia for more information.


Jump to navigation Jump to search

Pycnometer :MOST

4 bytes added, 13:34, 21 November 2019
A [https://en.wikipedia.org/wiki/Gas_pycnometer/ pycnometer] is an instrument used to measure the volume of solids based on the [https://en.wikipedia.org/wiki/Archimedes%27_principle/ Archimedes' principle using a gas]. There are two chambers of known volume that are pressurized sequentially. The pressure difference compared to that of the empty chamber or calibration volume is used to find the volume of the sample. Helium is the gas most often used since it is inert and the most [https://en.wikipedia.org/wiki/Ideal_gas/ ideal gas]. The density of the sample can be calculated if the mass is known. 
Be aware of hazards associated with compressed gas cylinders.

Navigation menu