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osmometry

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
os·mom·e·ter  (z-mm-tr, s-)
n.
A device for measuring osmotic pressure.


osmo·metric (zm-mtrk, s-) adj.
os·mome·try n.

osmometry
the measurement of osmotic pressure, or the force a dissolved substance exerts on a semipermeable membrane through which it cannot pass when separated by it from a pure solvent. — osmometric, adj.
See also: Physics
the measurement of osmotic pressure, or the force a dissolved substance exerts on a semipermeable membrane through which it cannot pass when separated by it from a pure solvent. — osmometric, adj.
See also: Measurement


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Number-average molar masses were measured by vapor pressure osmometry (Knauer, DMSO, 90[degrees]C).
But primary methods based on light scattering and vapor pressure osmometry give weight average and number average molecular weights respectively.
The lack of commercial standards arises from difficulties obtaining narrow molecular mass fractions of polyethylene and in measuring absolute molecular masses by light scattering or osmometry at temperatures as high as 150 [degrees]C.
 
 
 
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