When Lyman C. Craig, the award-winner American chemical researcher invented the rotary evaporation, he had little idea as to how his invention will revolutionize the chemical and pharma industries. Today, rotary evaporators find extensive and important use in modern “molecular cooking” labs. The rotary evaporators are also known as vacuum evaporators.
Evaporation is a common procedure followed in research and development. Evaporation allows the distillation of the solvent to enhance the concentration of solutions through the process of elimination of low and higher-boiling solid residue. It is a very essential step when extracting inorganic pollutants and organic synthesis from biological articles. It is no surprise to see a growing demand of high-quality laboratory evaporators in research laboratories that work for petrochemical, chemical, food and pharma industries.
What is a Lab Evaporator?
Lab Evaporator or Rotary evaporator is a modern instrument with a motorised lifting jack and digital heating bath which is designed with a detached evaporation flask. The device is used for chemistry research in laboratories for an efficient removal of solvents. You can customize the evaporators according to your needs and you can find different kinds of lab evaporators ranges from 1L to 100L.
Rotary evaporators are mainly work under vacuum pressure. You need to use them under constant heat and the bottles of the evaporators will rotate at constant speed. With the efficiency of an evaporator, the solvents become cool by glass condenser, and rotary evaporators are best for concentration and purification of biological articles. You can easily decompose or degenerate biological articles through this evaporator. You can use this evaporator for the concentration, crystallization, drying, separation and solvent recovery and academic research in the pharmaceutical, chemical and biopharmaceutical industries
The major components of a lab evaporator include:
• Motor element to rotate the evaporation flask
• Vacuum-tight conduit as the vapor duct
• Vacuum system to control the pressure within the evaporator
• Heated fluid bath to heat the solvent
• Condenser with coolant mixtures
• Condensate-collecting flask
• Mechanical mechanism to lift the evaporation flask
Commercial rotary evaporators in the market include the above listed basic components. However, the modern equipment for lab vacuum evaporators may include some added features such as digital display of temperature, digital control of vacuum and vapor temperature sensing.
The principle behind a lab evaporator
Rotary evaporators are primarily used for crystallization, drying, concentration, separation and solvent recovery. The evaporator is used in the academic research in different industries such as chemical, pharmaceutical and biopharmaceutical. The lab evaporator works under vacuum and at a constant temperature. The rotating bottle rotates at a continuous speed that results in the development of a large film on the walls of the bottle, and evaporates the biological solvents competently. The process is highly suitable for the purification and concentration of biological components that get easily decomposed at high temperature.
Why use the vacuum rotary evaporator
There are certain advantages for the scientific community who use the evaporator machine in their lab.
Here is what makes the vacuum rotary evaporator the first choice over the conventional static distillation for the research community:
• carry out single stage distillations gently and quickly
• four times capacity than the conventional static apparatus
• colour digital display to monitor and control rotation
•maximum safety in operations
• easy to assemble and maintain
• Top efficiency of process and accurate results
Thus, it is no surprise to see a widespread demand and success of rotary evaporators, thanks to their innovative and ergonomic design. Today, the vacuum distillation units are available in a wide range and with various features to meet the demand of the applications.
Main applications of lab evaporators
The laboratory evaporator is an important equipment for many labs and make use of motion, gas, heat to make a dry sample ready for analysis. The rotary evaporators find useful application in chemical engineering, active agent concentration, crystallization, recrystallization, extraction, molecular cooking and liquid mixture separation. It is also used for concentration of solutions and suspensions, liquid mixture separation,
chemical synthesis, powder drying, solvent distillation & recycling. Another significant application of the rotary evaporator is in the teaching. It is seen that the rotary evaporation applications have extended to molecular cooking in recent years. Molecular gastronomy is a relatively new science that is applied in the cooking industry and seeks to improvise and develop innovative cooking style. Advanced technology is integrated with cooking skills with the help of rotovap in order to evaporate the liquids via non-heating method.
Safety measures to follow when using lab evaporators
It is essential to be aware of the common risk involved when working in lab. After all, it is not uncommon to hear about implosions because of the use of flawed glassware that may crack. If any unstable impurities develop during evaporation, there are chances of explosions. It is not uncommon to come across burns, breakage of glassware and chemical exposure. Thus, one must follow all the precautions and safety measures when working in lab with the vacuum evaporators.
• To begin with, always wear safety gear and keep your body and face protected. Do not wear any loose garnets or jewellery. Take every precaution to avoid any contact with rotating parts of the evaporators. Extra caution must be taken when working with reactive materials especially under vacuum.
•A major disadvantage in rotary evaporations is the possibility of some samples to bump such as ethanol and water. It can lead to some loss in the material being used in the process. Even professionals can experience mishaps like bumping and thus need to apply some precautions to avoid such incidents. It is essential to equip Rotary evaporators with special traps and condenser arrays to handle particular difficult samples.
Look for a leading manufacturing company who carries the experience and skill to provide advanced laboratory equipment such as lab evaporators for the research community. The R&D team should work with knowledgeable scientists to understand important considerations regarding the performance of the lab vacuum evaporators. Essential considerations to keep in mind should include the performance, ease of setup, and the flexibility in filter.