Osmometer - définition. Qu'est-ce que Osmometer
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Qu'est-ce (qui) est Osmometer - définition

DEVICE FOR MEASURING THE OSMOTIC STRENGTH OF A SOLUTION, COLLOID, OR COMPOUND
Freezing point osmometer; Osmometry

Osmometer         
·noun An instrument for measuring the amount of osmotic action in different liquids.
Osmometry         
·noun The study of osmose by means of the osmometer.
Freezing point depression osmometer         
VARIETY OF OSMOMETERS
Clifton nanolitre osmometer; Clifton nanoliter osmometer; Nanoliter osmometer; Nanolitre osmometer; Clifton nanolitre; Clifton osmometer; Draft:Freezing point depression osmometer
The freezing point depression osmometer is a variety of osmometers that is used in determining a solution's osmotic concentration as its osmotically active aspects depress its freezing point. Osmometry further involves other techniques that include the membrane osmometry that determines osmotic pressure of solutions and vapor pressure osmometry that assesses the concentration of particles that minimizes a solution's vapor pressure and melting as well as freezing points of aqueous solutions.

Wikipédia

Osmometer

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 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 osmometers 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 total concentration of dissolved salts and 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. This is often used by chemists for the determination of average molecular weight.

Osmometry is also useful for estimating the drought tolerance of plant leaves.