Anosmometer is a device for measuring theosmotic strength of asolution,colloid, orcompound.

There are several different techniques employed in osmometry:

• Freezing point depression osmometers may also be used to determine the osmotic strength of a solution, as osmotically active compounds depress thefreezing point of a solution. This is the most common method in clinical laboratories because it is the most accurate and simple method.^[1]
• Vapor pressure osmometers determine the concentration of osmotically active particles that reduce thevapor pressure of a solution.
• Membrane osmometers measure theosmotic pressure of a solution separated from pure solvent by a semipermeable membrane.

Osmometers are useful for determining the total concentration of dissolvedsalts andsugars inblood orurine samples. Osmometry is also useful in determining themolecular weight of unknown compounds and polymers.

Osmometry is the measurement of theosmotic strength of a substance.^[2] This is often used by chemists for the determination of averagemolecular weight.

Osmometry is also useful for estimating thedrought tolerance of plant leaves.^[3]

• Clifton nanolitre osmometer, an example of a freezing point depression osmometer.

• Scientific techniques
• Measuring instruments
• Polymer chemistry
• Amount of substance

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• Use dmy dates from September 2023