ZZKD Rotary evaporation for sale
How to work rotovap?
Rotary evaporator machine
is an operation of vacuum distillation using a rotary evaporator. Rotary evaporators are mainly used for continuous distillation of large quantities of volatile solvents under reduced pressure. In particular, the concentration of the extract and the distillation of the receiving liquid during chromatographic separation can separate and purify the reaction product. The basic principle of the rotary evaporator is vacuum distillation, that is, under reduced pressure, when the solvent is distilled, the distillation flask is continuously rotating.
Structure: The distillation flask can be a pear-shaped or round-bottomed flask with a standard grinding mouth interface, which is connected to a decompression pump through a high-level reflux serpentine condenser, and the other opening of the reflux condenser is connected to a receiving flask with a ground mouth. Used to receive evaporated organic solvent. There is a three-way piston between the condenser tube and the decompression pump.
When the system is connected to the atmosphere, the distillation flask and the liquid-contacting flask can be removed to transfer the solvent. When the system is communicated with the decompression pump, the system should be in a reduced state. pressure state. When in use, the pressure should be reduced first, and then the motor should be started to rotate the distillation flask. At the end, it should be stopped first and then vented to the atmosphere to prevent the distillation flask from falling off during rotation. As a heat source for distillation, it is often equipped with a corresponding constant temperature water tank.The function of rotary evaporation is to evaporate the solvent, which is more efficient than the general method.
Principle: one is by decompression; the other is by rotating, so that the solution forms a liquid film and expands the evaporation area
How rotavapor works?
Traditional Rotary Evaporation: Rotary evaporators on the market handle a wide range of single sample volumes, but can only process 1 sample at a time. For a laboratory with a large sample volume, one rotary evaporator is far from enough, and four, five, or even more instruments are often arranged to operate at the same time, which covers a large area and has limitations in concentration efficiency. The working site of rotary evaporation is noisy and the exhaust gas is seriously polluted. Long-term use will cause both physical and mental harm to the experimenters.
ZZKD rotovap also adopts the traditional vacuum mode of rotary evaporation. It uses water bath heating and circular oscillation to provide heat. The sample solution can be quickly mixed to achieve uniform heat transfer and volatilization, avoiding the problem of bumping. Concentrating under vacuum and decompression environment is not easy to introduce oxygen or impurity interference, and the boiling point of the solution is low at this time, only slight heating can promote volatilization, so that the concentration efficiency can be greatly improved.
ZZKD rotavapor anti-cross contamination design:
Traditional rotary evaporator: usually uses a serpentine condenser tube for condensation, and the shared pipeline needs to be cleaned after a sample is finished, otherwise it may cause cross-contamination.
The cover plate heating design of ZZKD rotovap, independent channel type diversion, avoids sample liquid condensation on the cover plate, and can effectively prevent cross-contamination even at high throughput.
Concentration end method:
Traditional rotary evaporator: At the end of the traditional rotary evaporator, manually press the button or adjust the power off to make the flask rise, and then stop the rotary evaporation.
Compared with the non-automatic operation of the rotary evaporator, the Sage Scientific vacuum parallel concentrator MPE has a graphical interface designed to provide convenient human-computer interaction functions. After setting the time or end point, it will automatically stop after the concentration is completed, realizing unattended operation. , which is also the development direction of modern laboratories.
ZZKD rotovap recovery:
Traditional rotary evaporator: Since the recovery rate of the rotary evaporator is affected by multiple factors such as water bath temperature, rotation rate, tilt angle, and vacuum degree, it generally ranges from 50% to 90%.
ZZKD rotovap: The condensation device of ZZKD rotovap adopts a low-temperature serpentine shape for steam condensation. The corrosion-resistant PTFE system provides a durable and reliable performance guarantee for the harsh steam environment. The recovery rate of acetonitrile (coolant 0°C) is as high as 99.2%.
The sample volume processing technology of the rotary evaporator can only process one sample at a time, and the batch concentration speed is slow, and many laboratories have more inconveniences in the use process. Sage Scientific MPE high-throughput vacuum parallel concentrator combines the advantages of rotary evaporation and high-throughput evaporation. It can process multiple samples while preventing cross-contamination, and the concentration efficiency is up to five times that of traditional rotary evaporators!
As far as a single concentration method is concerned, there are also many factors that affect its final concentration effect. Only by continuously accumulating experience in practice and optimizing the concentration method, can the best concentration effect be obtained. I believe everyone can find the most suitable enrichment method!
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