A major application of a micropycnometer is that it allows one to measure the density of a solution when one only has a small volume available. For example, I would like to know the density of an H2018 sample. This stuff costs several hundred dollars per mL. My desitometer requires a minimum of 1.2mL. If I had a micropycnomter, I could get away with only needing a fraction of that amount
A conical cap is provided to a pscnometer to determine the volume of the test sample.
DensityThis refers to particle density of fluids and compact(ed) solids like crystals, in contrast to bulk density of grainy or porous solids. Aerometer liquidsDasymeter gasesGas collecting tube gasesHydrometer liquidsPycnometer liquidsresonant frequency and Damping Analyser (RFDA) solidsFor the ranges of density-values see: Orders of magnitude (density)
measure for measure has how many words? measure for measure maniy
what does the pulse measure
69th measure
1000-1048: Pycnometer: Abū Rayhān al-Bīrūnī
A pycnometer is an instrument used to measure the density or specific gravity of liquids and solids. To use it, first fill the pycnometer with the liquid or solid sample, ensuring there are no air bubbles. Then, weigh the pycnometer with the sample and record the mass. Finally, calculate the density by dividing the mass of the sample by the volume of the pycnometer, which is typically calibrated and known.
A pycnometer consists of a glass or metal container with a precise volume, a stopper or lid to seal the container, and a thermometer to measure the temperature of the liquid being tested. It may also have a hook or loop for suspending it in a fluid to measure its specific gravity.
The pycnometer is also commonly known as a specific gravity bottle. It is a laboratory device used to measure the density or specific gravity of liquids and solids by determining their mass relative to a known volume.
To properly use a pycnometer for measuring the density of a substance, first clean and dry the pycnometer. Then, weigh the empty pycnometer and record the mass. Fill the pycnometer with the substance, making sure there are no air bubbles. Weigh the filled pycnometer and record the mass. Calculate the density using the formula: density (mass of substance)/(volume of pycnometer).
According to the Wikipedia article on the gas pycnometer, the first patent was filed by John E. Shea on 13 Nov 1978 and it was issued on 08 Apr 1980.
__1__
The pycnometer method is more accurate than the hydrometer method because it uses an analytical balance.
To obtain the density of a liquid, you would need to measure its mass and volume. The density is then calculated by dividing the mass of the liquid by its volume. Typically, this is done using a balance to measure mass and a graduated cylinder to measure volume.
pycnometer technique involves the intrusion of a non-wetting liquid at high pressure into a material through the use of a porosimeter. Porosimetry is an analytical technique used to determine various quantifiable aspects a materials porous nature, such as pore diameter, total proe volume, surface area, bulk density, true density etc. you can read more in the related link
A. M. Geddis has written: 'Rapid estimate of solid volume in large tuff cores using a gas pycnometer' -- subject(s): Sampling, Soils, Volcanic ash, tuff, Pycnometer
A pycnometer is such a tool. It is a carefully calibrated glass container with a close-fitting stopper. Since the volume is accurately known, a simple mass balance may be used to determine the mass of your unknown liquid. There are also techniques available for measuring the density of a non-soluble powder, using the same apparatus. In normal use, the pycnometer is filled with your unknown fluid, and weighed. Then the device is cleaned thoroughly of any residue, and a reference fluid such as water or Mercury is used to fill the pycnometer. Simple arithmetic suffices to work out the density of the unknown material. Sometimes called the 'specific gravity bottle'.