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Rotary Evaporators
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Rotary evaporators (also called "rotavaps") are used to remove solvents from reaction mixtures and can accommodate volumes as large as three liters. They are found in almost every organic laboratory. A typical rotary evaporator has a heatable water bath to keep the solvent from freezing during the evaporation process. The solvent is removed under vacuum, is trapped by a condenser and is collected for easy reuse or disposal. Most labs use a simple water aspirator vacuum on their rotavaps, so a rotavap cannot be used for air and water-sensitive materials unless special precautions are taken. Products & Services
Evaporators are systems consisting of a heat exchanger or bath, valves, manifolds and temperature controls for conversion of a product (e.g., liquefied gas) from a liquid to a gaseous state.
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Laboratory freeze dryers preserve samples by freezing the material and then allowing sublimation to occur. This water-removal process is also known as lyophilization.
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Crystallizers are forced-circulation evaporators.
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Vacuum traps, vacuum getters and vacuum filters are used to remove tramp gases with a cooled surface, molecular sieve, filtration, or other processes.
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Process equipment and system integration services provide modular systems and components used to process fluids, oil, gases, sea water and powders. This product area includes process skids, distillation equipment, evaporators, desalination systems, secondary recovery systems, chemical injection systems, and solvent recovery systems.
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Topics of Interest
Evaporation is the removal of a solvent, usually water, by its vaporization from relatively nonvolatile solute, usually a solid. The evaporators may be single-effect or multieffect, the latter for...
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2.3 Fractional Precipitation
In this method a solution or dispersion of a plastic is stirred into at least 10 times its volume of a solvent, which acts as a precipitant for the dissolved plastic but...
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5.1 ORGANIC SOLVENTS AND VOLATILE ORGANIC COMPOUNDS
Organic solvents have played a key role in the development of many useful products. They are used, for example, to produce pharmaceuticals of the...
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6.1 WHERE THE REFRIGERATION LOAD ENTERS THE SYSTEM
The evaporator is the component of the refrigeration system where a fluid stream or a product is cooled. As Fig. 6.1 shows, the evaporator is the...
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OVERVIEW
The most common method of purification of inorganic species is by recrystallisation, usually from water. However, especially with salts of weak acids or of cations other than the alkaline...
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