A Magnetic Suspension Osmometer

A Magnetic Suspension Osmometer

The magnetic suspension balance is used for the measurement of very small osmotic pressures. The apparatus is essentially the same as that previously used for the measurement of the density and viscosity of protein solutions except that the magnetically suspended buoy is modified to make it pressure...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 1973-12, Vol.70 (12), p.3785-3787
Hauptverfasser: Beams, J. W., Hodgins, M. G., Kupke, D. W.
Format: Artikel
Sprache:eng
Schlagworte:
Air pressure
Animals
Biological Sciences: Biochemistry
Buoys
Cattle
Chemistry, Physical - instrumentation
Density
Magnetic fields
Magnetic suspension
Molecular Weight
Osmometers
Osmosis
Osmotic Pressure
Permanent magnets
Serum Albumin, Bovine
Solvents
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Beschreibung
Zusammenfassung:The magnetic suspension balance is used for the measurement of very small osmotic pressures. The apparatus is essentially the same as that previously used for the measurement of the density and viscosity of protein solutions except that the magnetically suspended buoy is modified to make it pressure sensitive. The method is especially useful for the measurement of osmotic pressure in small samples of dilute solutions (about 10-6M) or of substances with molecular weights greater than 105. A height-sensing device has been developed which is not dependent upon the visual precision of the operator.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.70.12.3785