osmometer


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osmometer

[äz′mäm·əd·ər]
(analytical chemistry)
A device for measuring molecular weights by measuring the osmotic pressure exerted by solvent molecules diffusing through a semipermeable membrane.
References in periodicals archive ?
Sodium and potassium contents of the urine were measured using a B462 flame photometer (f); chloride was measured with a multi-biochemical analyzer (d); and osmalarity was measured using an osmometer (c).
The osmotic pressures of Hank's solution and sperm cells measured in Fiske brand micro osmometer device are mOsm/kg and 306 mOsm/kg, respectively.
The pH value and osmotic pressure of all vitrification solutions were measured by a pH meter (Mettler Toledo, USA) and an Osmometer (OSMOMAT030 Cryoscopic Osmometer, Germany), respectively.
For the determination of soil osmotic potential, the soil solution was collected in the same day, using an extracting capsule and its osmolality was determined through vapor pressure osmometer, while the soil osmotic potential was estimated through the Van't Hoff equation.
The dependent variable was osmolality, determined by a freezing point depression osmometer.
The sap was put on osmometer (Model; OSMOMAT 030, Cryoscopic osmometer, Gonatee) for the measurement of solute in osmolkg-1.
The plasma oncotic pressure was measured as mmHg with an Osmomat 050 Colloid Osmometer Viscometer (Gonotec GmbH, Germany).
This trend is similar to that observed in coal tar studies where a roughly linear relationship between molecular weight, measured by a vapor pressure osmometer, and mass loss was derived from the vacuum sublimation data [13].
Also, osmolality measurements were performed with a Vapro model 5520 Vapor Pressure Osmometer calibrated from 100 to 500 mosm/kg (Wescor, Inc.
A 100 [micro]L aliquot of cell sap was loaded on a paper disc and placed in a vapor pressure osmometer (model 5520, Wescor, Logan, UT).
The serum osmolal gap (75 mOsm/kg) was calculated as follows: Osmolal gap = freezing-point depression osmometer value --(2 X [[Na.
Osmolality was measured by the Division of Chemical Pathology at the University of Cape Town, SA, using a freezing point depression osmometer.