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Rotary Evaporator

A rotary evaporator is used in removing solvents present from mixtures of reactions and can contain volumes of up to 50 liters.

They are widely used in organic laboratories as they are known to perform such kind of tasks high-speed and efficient. A rotary evaporator has a water or oil bath which can be heated either in a crystallization dish or in a metallic container so that we can keep the solvent not to freeze during the process of evaporation.

WKIE Lab Rotary Evaporator for Sale


Rotary Film Evaporator

WKIE Lab rotary evaporator

Rotary Evaporator With Motor Lift

rotovapor with motor lift

Rotary Evaporator With Hand Lift

rotary evaporator with hand lift


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1. Rotary film Evaporator.

Rotary film evaporator is the most suitable rotary evaporator to use when working with materials that require reduced heat and pressure when separating or mixing. Therefore, this device is mainly utilized in small scale industries. The device is equipped with mechanical parts to ensure it operates under low heat and pressure. The equipped rotating flask covers a significant part and ensures there is a proper distribution of the temperature and pressure without necessarily adding local heat.

The vacuum provides a good evaporation process at low temperatures. Keep in mind that the boiling point and the time are also significantly reduced. This type of rotary evaporator is used in the pharmaceutical, and beauty industries.

rotary film evaporator for sale

Common Feature:

  • Automatic bath lifting.

These evaporators are equipped with automatic bath lifting essential in controlling the temperature needed. So, if the boiling point goes high, the bath automatically goes down or shuts off.

  • Digital display.

The film evaporators are equipped with digital display to ensure close monitoring of the time and temperatures. The film evaporator is best suited for materials that are sensitive to high heat and pressure. Therefore, the digital display helps to monitor the time and pressure to avoid overheating the substances.

  • Versatile drive.

The drive of the rotary consists of a hollow glass shaft. It is also used to take off the vapor from the boiling materials.

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2. Rotary Evaporator with Motor Lift.

The rotary evaporators with motor lift are equipped with a manual motor lift-up which enables you to control the process in case of a power outage. They come with different flask capacities which range from 2 liters to 50 or more. Managing the entire process is made easy with the digital LCD screen that enables one to view the evaporation process and make necessary changes.

The locking position on this evaporator is adjustable to different directions, especially if one is using different sizes of the flasks, or if one needs to move the vacuum seal from the contact position. You can quickly move the motor with switch operation. All these rotaries are made with glass condensers which prevent the liquids from stagnating and thus, improve the cooling process.

rotovapor with motor lift

Common Features:

  • High chemical resistant parts.

All the components utilized in the evaporation process are made of borosilicate glass and PTFE, which prevents corrosion even when used with harsh chemicals.

  • Specialized motor.

The motor can be lifted when controlling the process. Note that this mechanism also helps to prevent overheating in case of a power outage.

  • Downward condensing vacuum.

This rotary has a downward condensing vacuum to ensure safety in the process.

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3. Rotary evaporator with hand lift.

Rotary evaporator with hand lift is a manual evaporator which you get to control the motor function using the hand. These devices are equipped with an LCD for easy monitoring of the evaporation process. The heating bath is made of stainless steel material that does not corrode easily. This rotatory has a durable rubber seal made of polytetrafluoroethylene to keep the vacuum tightly sealed.

It also utilizes the dual-layer cooling to ensure an improved and efficient condenser performance. It comes with a digital heating bath that provides even temperatures as needed. Always make sure to clean up the glass parts before setting the device up for use.

rotary evaporator with hand lift

Common Features:

  • Low temperatures and pressures.

The device operates at low pressure and heat to ensure excellent condensation results. This is one of the features that makes it ideal for use in pharmaceutical and learning institutions.

  • Durable materials.

It is made of non-corrosion Material that does not get easily damaged by the used chemicals.

  • Hand control.

This is a manual device that you get to control with hands when performing the experiments. The manual option makes it easy to manage the processes.

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If you are looking for a reliable industrial rotary evaporator to use in different fields, the above are top best to consider. They are made distinct features that make them ideal for use in various industries such as beauty, pharmaceutical and even in higher learning institutes.

Different Sizes From 2L To 50L

Rotary evaporators are the leading devices used in chemical reactions for the removal of the solvents. They come in different sizes and features to fit various projects. For example, if you are working on a large project that involves major working chemicals, you may need to consider a large-sized rotary device. The sizes are measured in liter capacity, which ranges from as low as 2 liters to 50 liters.


2L Rotary Evaporator

2L rotovap

20L Rotary Evaporator

20L rotovap

50L Rotary Evaporator

50L rotovap


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1. 2L Rotary Evaporator

Other than removing the solvents, this equipment can also be used for the removal of molecules. This evaporator equipment of 2L works under various circumstances such as low or high pressure to give efficient results.

This equipment is equipped with a 2-liter flask and an extra 1-liter flask which is suitable for collecting the finished product. The rotating speed occurs from 0 to 120 R/min based on the product that you are working on, while the evaporation speed occurs from 1.5 to H20. This equipment has a powerful motor that ensures it works efficiently with a temperature range of RT-99 degree Celcius to -299 degree Celcius.

2L rotovap

The Features:

  • Corrosion resistance rubber

The equipment has fluoro rubber which is made of sturdy and quality material resistant to corrosion from the harsh chemicals. Thus it cannot easily get damaged from the constant water and chemicals passed through it.

  • High speed

It has high evaporating power and high recovery speed for fast and ease in working on various projects.

  • Easy to use

All the provided parts are super easy to connect when setting up the device. It is also easy to connect to other appliances when working.

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2. 5L Rotary Evaporator

5L rotary evaporator has evaporating power which makes it suitable for large industries applications. It is highly used in chemical industries, pharmaceutical industries and also higher institution learning.

The device adopts the flask enlarge, which works under reduced pressure to ensure the solution in the bottle defuses for the efficient evaporation process. It is equipped with a water bath which continually heats up while the flask rotates in it. This rotary is suitable for use with concentrated, drying and recycled materials since it has functional parts. It has an effective temperature range control of -99 degree Celcius and the rotary bottle is 5 liters for efficient collection of chemicals.

5L rotovap

The Features:

  • Polytetrafluoroethylene and rubber seal

The rubber seal is crafted of high-quality material that ensures it completely encloses to keep the vacuum temperature degrees intact. It is also resistant to corrosion.

  • High-quality condenser

The high condenser helps to achieve the best and high recovery rate of the chemicals.

  • Large digital display

It is quite easy to control the temperature and the pressure under which the equipment works with thanks to the large display digital display.

  • Layer cooling coils

The equipped layer cooling coils help to cool the condenser for better performance.

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3. 10L Rotary Evaporator

10L rotary evaporator is a perfect example of the best device for distillation and other extraction devices. It is equipped with a sturdy working device that enables it to remove all the solvents and molecules from the chemicals.

This rotary model has a 10-liter capacity, which consists of two collection flask each measuring 5 liters. The motor is quite powerful since it functions at 120 W, plus the rotating speed range from 0 to 140 rmp depending on the distilled substance. The device has a heating bath which has a speed rate of 3KW and two coiled condensers for the effective distillation process.

10L rotovap

The Features:

  • Vacuum system

This rotary comes with a vacuum system essential for reducing the pressure within the evaporating system.

  • Adjustable speed

The working speed range from 0 to 140 pm and it can easily be adjusted to different rates depending on the chemicals you are working on.

  • Easy to use

It is quite easy to assemble and disassemble the device with the provided manual. Using it is also easy since it is equipped with an LCD screen which makes controlling comfortable.

  • Powerful motor

The powerful motor enables the device to run under high to low pressure and even different speed variances for excellent results.

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4. 20 L Rotary Evaporator

20L rotary evaporator has a wide range of applications in various industries such as food, beauty industries, and even medical industries. It has high evaporation power and large storage capacity, which suits large application jobs.

20L rotary evaporator comes with an additional flask with measures about 5 liters. The motor is quite powerful, making it possible to evaporate chemicals under low and high speed/pressure. The rotating speed range from 0 to 120 w. The heating bath has a temperature rate of 5KW while the temperature controlling range at 200 degrees Celcius.

20L rotovap

The Features:

  • Two coiled condensers

The device comes with two coiled condensers which ensure excellent sealing for the active process.

  • Corrosion resistance

The sealing rubber is made of high-quality material that is resistant to corrosion even after prolonged exposure to chemicals.

  • Modular design

Connecting all the parts of the device is quite easy due to its design, and the disassembling process takes less time as well.

  • Easy to operate

Working with this device for various projects is straightforward, and it has a manual for guidance.

  • Convenient

The rotary evaporator has high evaporation power and recovery is efficient.

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5. 50L Rotary Evaporator

50L rotary evaporator is the top best and large rotary evaporating device useful in various industrial applications. The evaporator is used in distilling and separating chemicals. The rotary comes with a water circulating vacuum pump and circulating chiller to ensure the production condition is reliable.

The 50-liter evaporator comes with four receiving flasks with each measuring capacity of 5 liters. The temperatures range of -99 degrees Celcius. The motor works under a high power of 250 W, which in return enables the equipment to operate under high and low pressure. The condensers are made with two vertical coils for ample sealing of the pipes.

50L rotovap

The Features:

  • 20 Litre collection flask

The 20 flask collection capacity makes it easy to work on large chemical projects.

  • Rotary vacuum evaporator

This part works under the vacuum condition to give the boiling flask constant temperature heating.

  • High-efficiency glass condenser

The device comes with high-efficiency glass condenser which cools down the solvent vapor.

  • Polythene and rubber sealing

The sealing is made of high quality and non-corrosive materials to ensure continued use.

The above reviews are the top best rotary evaporators essential for use in different industrial manufacturing of chemicals. These rotary evaporators come in different sizes to carry out small ad extensive evaporation experiments. Check out the available pats and the features when selecting the right evaporator for your project.

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Rotary Evaporator Manufacturer – WKIE Lab

As one of the best rotary evaporator manufacturers, WKIE Lab is professional and experienced in producing experiment equipment, and we are always committed to providing our customers with the best service and products. On the one hand, we have professional teams with experienced engineers and highly-trained workers; and on the other hand, we have well-equipped factories for manufacturing equipment in accordance with customers’ meets. Additionally, the kinds of WKIE Lab equipment are various; from rotovapor to molecular distillation, you can always find the one you need, From the construction to now, our equipment has been sold to more than 50 countries, and have won high praise and good reputation from clients.

For more information on rotary evaporators for sale, just contact us and we will provide top quality product and services for you wholeheartedly.

The Benefits of Buying A WKIE Lab Rotary Evaporator:

  • Saves Energy

Its topmost advantage is that it saves a great deal of energy. This is because it negates the need to heat the solution to the boiling point. Instead, it lowers the pressure of the fluid in such a way as to make its boiling point lower. For this reason, you will not have to dig you deep into your pocket to operate it.

  • Faster

Compared to its closest rival, distillation, the rotary evaporator is faster. Indeed, it yields the desired ends within a shorter duration of time.

This cuts down the otherwise long wait times you have to put in to be able to enjoy the benefits that come along. The pleasure of convenience is hence yours to reap.

  • Convenient Controls

In all, this tool is simple and easier to control. It does come equipped with a set of convenient controls for your use and leverage. You also need not possess huge expertise to be able to have your way in them at all. The beauty of this arrangement is that even a starter will find it easier to handle.

  • Less Risky

Other than convenient controls, this equipment is also less risky than ordinary rivals and counterparts. It is fitted with tons of safety devices and features. These minimize explosions, overheating, short-circuits, and other likely dangers. Moreover, it does enjoy a relatively safe track record. You have all your safety and peace of mind guaranteed.

  • Highly Effective

All said and done, the rotary evaporator is highly effective. It does the job of extracting solvents well and with minimal dangers and damages. You can never afford to look elsewhere as this equipment embodies all the traits and strong points that good equipment of this kind is ordinarily expected to.

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WKIE Lab Best Rotary Evaporator Price

You may be wondering, how much these high-quality rotary evaporators sell? Don’t worry, in WKIE Lab, you can always get the highest-quality product at a reasonable price.

WKIE Lab has the most advanced and modernized factories, where we use the latest technologies and the most durable equipment to manufacture our rotary evaporators. In addition to this, WKIE Lab also has its own design teams formed by experienced engineers and highly-trained workers. There is no need for us to outsourcing our business. So, in WKIE Lab, you can get high-quality products at a low cost.

rotary evaporator types

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The Specifications of WKIE Lab Rotary Evaporators

ModelR-1010R-1020R-1050RE-1002RE-2002RE-3002RE-5002
Rotation Flask10L20L50L10L20L30L50L
Bath LiftMotor LiftHand Lift
CondenserGlassware: Vertical with dual-spiral glass tubing
Flask Rotation Speed0-120rpm0-110rpm
Motor Power250W250W250W180W180W250W250W
Receiving Flask5L10L20L5L10L20L20L
Vacuum Degree(Ultimate Pressure)20mbar
Heating Power(customizable)4KW4KW6KW3KW5KW8KW8KW
Temp. ControlPID from main heater, ON/OFF Control
SafetyOver-temp and fuse protections
Glass MaterialHigh borosilicate glass 3.3
Power Source220V 1ph, 50HZ(Customized: 110V)

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The Applications of WKIE Lab Rotary Evaporator

1. The Applications of Rotary Evaporator in Lab

rotary evaporators in lab

The basic accessories of this evaporator in the lab include snakelike condenser pipe, receiving flask as well as evaporation flask. The most important application of this device is chemical engineering as well as the medical and biological field. They are very useful for production and scientific research.

Evaporation crystallization, separation as well as drying and solvent recovery process is also part of it. Apart from that, it is widely used in the laboratory. It is used for chemical reaction, mixing, and formulation. The most important application here is that it is used for teaching purposes. During the experimental process, it is put in a desk where students learn how that process works.

Because of the fantastic and durable design, it can withstand laboratory uses. This is because it can hardly break and even if rolls and falls, you discover that it does not break.

Furthermore, the model is used for molecular cooking as well as molecular gastronomy. This process applies chemical as well as physical cooking industry. Molecular cooking is an innovative method of cooking and it is widely used across the world. This is one of the most important applications of this device. Because of the advanced technology, it can enhance the cooking skill.

The other important application of rotovap is that it can be used for the removal of solvents samples and that works through the evaporation process. When it is used in molecular cooking, the aim is for extraction and distillation purpose. The vacuum system also facilitated the wide usage of the device. The glassware used in it also makes it great and durable for use.

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2. The Applications of Rotary Evaporator in Industry

industrial rotovap

Listed and explained below are few of the uses of this wonderful piece of equipment in industry:

  • Educational and Informational

This equipment may be used for educational and informational undertakings. Examples of these are chemical, educational, fuel, and environmental purposes. It hence finds applicability in schools, laboratories, museums, and many other facilities which employ heavy machinery of these kinds. In these senses, it mainly dares to drive some points home.

>> Educational Rotary Evaporator

  • Drying Powders

The tool may serve to dry powders. For it to serve this role, it has to be attached to a test tube adapter. Unlike the other approaches, this one does not involve too hectic procedures and approaches. It hence does the job but without the unnecessary hassles which other approaches have to contend with.

  • Flavor Extractions

In the food industry, the rotary evaporators may be used to extract flavors. These flavors are subsequently used to adorn other foods and drinks. The tool is yet again quite handy indeed. Unlike its counterparts, it does not at all lead to the loss of flavor in the course of extraction.

  • Sample Preparations

When preparing some samples, the rotary evaporator may yet again come in. In particular, this equipment is awesome for the preparation of the High-performance liquid chromatography (HPLC) and a couple of other natural samples. It retains the accuracy and integrity of the samples to yield good results.

  • Sample Concentration

Some samples require that the solvents be strongly concentrated. This machine also comes to the rescue. It extracts excess solvents to leave behind a higher concentration of solutes. In this way, the sample becomes more concentrated in such a way as to serve the role which is needed just fine.

  • Solvent Removal, Separation, and Recycling

Yet again when removing, separating and recycling solvents, this machine comes in handy. Like in the case above, it has the ability to eliminate excess solvents from a solution. In this way, it also manages to separate the solvent from the solution and also manages to recycle.

  • Trapping Hazardous Waste Liquids

Lastly, this machine also traps hazardous waste liquids. It hence finds wide applicability in industrial settings which employ a huge volume of liquids and chemicals. The food, cleaning, detergent, and soap-making industries are the key beneficiaries of this item altogether. Many governments also vouch for its use in order to save the environment.

We could go on and on and on had it been possible. Due to the limitations of space and time, we inevitably had to stop there. As you may see, this tool has numerous applications and uses. It is certainly in your best interest to make the most of it.

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3. The Benefits of Plant Extraction By Using WKIE Lab Rotary Evaporator

Plant Extraction By Using Rotary Evaporator

It is good for the extraction of such plants like terpene and cannabinoid extraction. This is works through different processes such as distillation. When it is used to extract raw cannabis, the outcome is called shatter as well as THCA and this is rich in oral formulations. After the extraction process, it can be used to manufacture different things such as tinctures, oils, edibles, and various vaporized concentrates.

Furthermore, it remains the most efficient as well as the best environmentally friendly method of doing away with volatile solvent from such products as non-volatile samples. This is possible because this solvent is reusable and they are recoverable. Because of that, you are going to use to minimize unnecessary wastes and cover overhead expenditure.

During the extraction process, the lipids and waxes are removed from such plants and other desirable products such as cannabinoids and flavonoids as well as terpenes. It is used for that kind of purpose because it is efficient and you are going to use it with reduced or minimal labor. Once it is extracted, the product can be reclaimed. It can reduce the cost of production because it would significantly bring down the cost of production.

The presence of a vacuum in the process is a great advantage because it can enhance the distillation capacity. Moreover, the system pressure and boiling points have shown to be codependent. These can be easily adjusted and when that is done, it makes available that ideal boiling point. Just as you reduce the temperature of the condensation capacity of the product also lowers. When this happens, bumping can result in the process. Inevitably this equally leads to an unnecessary solvent dissipation. It is easy to extract plants through this process and it is widely used more than any other.

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Precautions for Rotary Evaporator Use

how to use a rotary evaporator

1. The flask that is collecting the solvent should always be emptied to avoid mixing of chemicals that are not compatible to prevent accidents.

2. The flask containing the solutions should be placed on the rotary evaporator. The bump trap is used to prevent the solutions from splashing into the condenser hence contaminating it. It is advisable always to start the process with a clean bump bulb so that if bumps over happens; the solution or the solid can be recovered.

3. A Keck clip or a metal is used to secure the bump trap or the flask

4. On the monitor, there is a deal, which is used to control the rotation of the flask. The rotavap mostly uses a variable speed between 0 to 220 rpm that is sparkles produced by the spinning motor and provides a high contact torque.

5. The vacuum of the aspirator is turned on and is managed when the stopcock which is on top of the condenser. As well the stopcock is also useful to vent after the solvent has been discharged from the setup

6. The flask is immersed in the water bath when the condenser is tilted; adjustments should be made. The water temperature should be below the boiling point of the solvents. If the solvent is small, the bath heater is not necessary.

7. The solvent is obtained on the condenser as it is collected in the receiving flask. Solvents that are so volatile like dichloromethane and diethyl ether can evaporate in the receiving flask. Liquid nitrogen or dry-ice condenser is used to collect it.

8. When all the solvent has evaporated, you can now release the vacuum. The flask will rise above the water bath, and you can stop the spinning.

9. The bump trap can now be cleaned, and you can empty the receiving flask when the processes of evaporation are over.

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How Does A Best Rotary Evaporator Work?

A rotary evaporator is an instrument applied in both biology and chemical used in the laboratories and pilot plants for the evaporation of solvents. A rotary evaporator contains a vacuum system, an evaporation flask that is mechanized to rotate, a condenser and a collecting flask.

how does a rotary evaporator work

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A rotary evaporator operates in a principle that the liquid’s boiling point reduces when their pressure is reduced, this allows solvents to vaporize at lower temperatures than operating under the standard boiling points and normal pressure.

The vacuum system can accomplish the whole process by only selecting a vacuum pump that is suitable for the rotavap which will improve the efficiency of evaporation.

The condenser is used to convert the evaporated gas back to its liquid state, here the lowered temperature conditions are necessary. The cooling effect is achieved by the use of cold water, dry ice or by use of liquid nitrogen.

the condenser of rotovap

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The evaporation flask should be always be rotating to ensure the surface area of the liquid is increased. The surface area should be large enough, then the normal to increase the evaporation rate. When the flask is rotating, the centrifugal force will keep the liquid on the inner surfaces of the flask hence exposing a large surface of the liquid, increases the rate of evaporation.

rotovap flask

On the monitor, there is a deal, which is used to control the rotation of the flask. The rotavap mostly uses a variable speed between 0 to 220 rpm that is sparkles produced by the spinning motor and provides a high contact torque.

The rotavap is very efficient and recommendable to remove the majority of organic solvents at the time of the extraction process.

When using a mechanical pump to operate instead of an aspirator to provide a vacuum, the secondary trap should be used to stop the solvent liquid from destroying the membrane.

rotary evaporator pump price

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The heating bath should contain distilled water to reduce the scale from building up in the tub, causing coats around the thermistor. When using water that is not distilled, it will result in the growth of algae colonies mostly during summer months. This can be avoided by exchanging water regularly.

If there are algae growth coats, the condenser has to be removed and then soak the coil by the use of the dilute nitric acid solution by allowing it for a few hours. Then later rinse the rotavap carefully before assembling it.

Rotary Evaporator Bumping Problem

Ways to Solve Rotovap Bumping

The Problems Come With Rotovap Bumping

Bumping is one of the problems associated with a rotary evaporator. When it bumps it will lead to an unnecessary solvent lost. This shows that just as the process has great advantages that are associated with it, there are also some negative aspects of it as well.

Bumping problems is as bad as the annihilation of substance which is one of the challenges of this process. Other challenges observed in the process include slow evaporation and so on. The main thing here is that these can course more problems to that system if it is handled wisely.

The limitations in the course of its use cannot be avoided. Further research has to go on to find the best ways of handling that limitation. The rotary evaporator concept is not new as the concept has been there for more than five decades. What is new are some of the challenges that are observed. These challenges begin to manifest as the use of the product of that system is intensified.

How To Solve Rotovap Bumping?

The way to address that problem was evolved over them and that brings in the concept of vacuum vortex evaporator. This among other thing ensures to reduce the problem of bumping significantly. When you heat the sample, it is natural that it has to bump as it boils. This simply means that it begins to erupt and this comes with its challenges. When the sample is lost, the user is losing the precious time spent on it as well as money used to secure those samples. This problem is done away with when you apply the vacuum vortex evaporation technology in any smart evaporator.

It is usually stirred and that is done in an airflow based liquid vortex and that is done through steady atmospheric pressure. When this is done, it makes bumping impossible and reduces the problems associated with it which include sample lost and loss of money.

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How to Set Up A WKIE Lab Rotary Evaporator

step by step rotovap setup

1. Fix the rotating joint ring to the glass rotary joint and leave the tapered edge of the joint ring is facing the driving unit.

2. Slide the rotary joint ring to the driving unit until you hear a click sound when the two parts connect.

3. Pick the two available vacuum seals ( main and semi-vacuum seals) and join them to the rotary joint. The two seals are brown and should face outwards ones connected to the rotary joint.

4. The other step involves the fixing of the rotary joint ring to the driving unit. Make sure to push the joint ring to the driving unit until it snaps.

5. Get the condenser support which is made of metal rod and knob bolt and fix it to the driving unit. Make sure to leave some room for movement in case you need to turn it.

6. Attach the glass trap manifold to the driving unit. The glass trap is quite fragile; hence, you should fit slowly as it can break and even injure you. Don’t force it to the unit.

7. Attach the condenser column to the trap manifold and ensure the coil inlet and outlet are facing outward. (note that this fitting is recommended for those with type V and T Condenser). If you are using type S Condenser, fix it directly to the driving unit while the coil inlet and outlet are facing upwards.

8. For Condenser V and T, attach the condenser clamp to the supporting rod. Ensure to tighten the clamp hook around the condenser clamp and finish off by connecting it to one of the holes near the screw set. For ample fitting of the Condenser, tighten the set screw and knob bolt. Note that this step is not ideal for type S Condenser.

9. Attach the flask which formed in a spherical shape to the trap manifold using the ball joint clip. If you are using type S, connect it directly to Condenser.

10. Using the joint clip, fix the evaporating flask to the rotary joint.

11. The next step involves the fitting of the capillary feed tube. This is done through the trap manifold for the V and T models. The S models use the Condenser to connect the capillary feed tube. Note that the V models come with a glass suction nozzle that should be joined to the top part of the Condenser.

12. Then attach the available water cooling nozzles and the vacuum nozzle to the Condenser. In most cases, the water cooling nozzles come in two pieces.

13. Lastly, place the bath under the evaporating disk.

For an effective evaporation process using the rotary evaporator, use the above steps to help you set it up. Read the manufacturer’s manual to learn about the precautions to take when handling the available parts of the device.


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