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osmometer

 
Dictionary: os·mom·e·ter   (ŏz-mŏm'ĭ-tər, ŏs-) pronunciation
 
n.

A device for measuring osmotic pressure.

[OSMO(SIS) + –METER.]

osmometric os'mo·met'ric (ŏz'mə-mĕt'rĭk, ŏs'-) adj.
osmometry os·mom'e·try n.
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1. a device for testing the sense of smell.
2. an instrument for measuring osmotic pressure.

 
Wikipedia: Osmometer
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An osmometer is a device for measuring the osmotic strength of a solution, colloid, or compound.

There are several different techniques employed in osmometry:

  • Vapor pressure depression osmometers determine the concentration of osmotically active particles that reduce the vapor pressure of a solution.
  • Membrane osmometers measure the osmotic pressure of a solution separated from pure solvent by a semipermeable membrane.
  • Freezing point depression osmometer may also be used to determine the osmotic strength of a solution, as osmotically active compounds depress the freezing point of a solution.

Osmometers are useful for determining the concentration of dissolved salts or sugars in blood or urine samples. Osmometry is also useful in determining the molecular weight of unknown compounds and polymers.

Osmometry is the measurement of the osmotic strength of a substance [1]. This is often used by chemists for the determination of average molecular weight.

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Osmometer" Read more