osmometer

Osmolality can be measured on an analytical instrument called an osmometer.

Thermal hysteresis is easily measured in the lab with a nanolitre osmometer.

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

When assembled, the osmometer is placed in a jacket containing enough solvent to cover the bottom part of the reference capillary s.

Osmolality was analysed with the vapour pressure technique with a Wescor 5500 osmometer.

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

The Melab osmometer has a stainless steel cell (volume 0.5 cm 3 ), with solution and solvent compartments separated by the membrane.

Consequently the effective osmotic pressure that it exerts on biological membranes is far less than its osmotic pressure measured by an osmometer.

Osmolality can be measured using an osmometer which measures colligative properties, such as Freezing-point depression, Vapor pressure, or Boiling-point elevation.

The osmometer is assembled, under a layer of solvent, by clamping two membranes (kept continually moist with solvent) on either side of the glass cell c.

Mercury is added to the cup t, to ensure a leak free system, and the osmometer is left undisturbed in a thermostat bath controlled to 0.01 K to reach equilibrium.

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.

A Clifton nanolitre osmometer is a device that allows the determination of the melting and freezing point of an aqueous solution using a sample size of only nanolitres.

The vapor pressure osmometer is composed of two chambers: one for pure solvent and the other to contain solution, where the solute is the polymer whose molecular weight is unknown.

The Clifton nanolitre osmometer is especially well suited for determining the antifreeze activity or thermal hysteresis of a solution, which is a difference in the melting and freezing point of a solution.

The Mechrolab osmometer, shown schematically in figure 9.3, consists of a solution + solvent cell of volume approximately 1 cm 3, with the solvent side connected to a reservoir attached to a servo-driven elevator.