A rotary evaporator is a versatile tool used in various fields such as chemical, pharmaceutical, and biopharmaceutical industries.
It is particularly suitable for the concentration and purification of biological products that are easily decomposed and denatured at high temperatures.
The rotary evaporator works by mechanically rotating a flask containing the compound in solution in a heated water bath.
The flask is connected to a vacuum pump that reduces the pressure above the bulk solvent, facilitating the draw of the evaporate away from the sample.
Under low temperature and negative pressure, the evaporation flask is rotated by a motor in a thermostat water bath, which makes the liquid form a thin film across the interior of the flask, increasing the evaporation area.
The solvent evaporates while the compound remains.
The main uses of a rotary evaporator include concentration, crystallization, drying, separation, and solvent recovery.
By creating a large-area film on the bottle wall and evaporating efficiently, a rotary evaporator can rapidly extract excess solvent from less volatile samples.
The solvent vapor is cooled by a high-efficiency glass condenser and recovered in a collection bottle, greatly increasing the evaporation efficiency.
The function of a rotary evaporator is to extract solvents from liquid mixtures by evaporation.
It can also be used to separate or concentrate substances or materials.
The rotary evaporator is designed to efficiently and gently remove solvents from samples, making it a valuable tool in chemical laboratories.
The purpose of using a rotary evaporator can vary depending on the specific application.
Some common purposes include:
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Concentrating non-volatile components in a mixture: By removing the water or other solvents, the rotary evaporator can concentrate the purest and freshest flavors from a substance like a blood orange.
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Extracting volatile aroma and flavor molecules: The rotary evaporator can gently extract the desired flavors from a mixture of alcohol, herbs, and fruit without heating the mixture up, preserving the delicate aromatic compounds.
In summary, a rotary evaporator is a versatile piece of equipment used for extraction, concentration, crystallization, separation, and solvent recovery in various industries.
It works by mechanically rotating a flask containing the compound in solution in a heated water bath, creating a large-area film for efficient evaporation.
It is especially useful for the concentration and purification of biological products that are sensitive to high temperatures.
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