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osmometry

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osmometry
[ozmom′ətrē]
Etymology: Gk, ōsmos, impulse, metron, measure
the field of study that deals with the phenomenon of osmosis and the measurement of osmotic forces. osmometric, adj.

osmometry
the technique of measuring osmolar concentrations. The definitive method of measuring solute:solvent ratios.


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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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