5 Liter Rotovap
(1)1L/2L---Manual lifting with irony base/Manual lifting with SS base/Electric lifting
(2)3L/5L/10L/20L/30L/50L---Manual Lifting/Electric Lifting
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2. Customization:
(1)Design support
(2)Directly supply the Senior R&D organic intermediate, shorten your R&D time and cost
(3)Share the advanced purifying technology with you
(4)Supply the high quality chemicals and analysis reagent
(5)We want to assist you on Chemical Engineering (Auto CAD, Aspen plus etc.)
3. Assurance:
(1)CE and ISO certification Registered
(2)Trademark: ACHIEVE CHEM(since 2008)
(3)Replacement parts within 1-year for free
Description
Technical Parameters
The 5 liter rotovap is an important laboratory equipment, which is widely used in chemical experiments. By rotating the conical flask at a high speed and using the form of internal and external circulation, the solvent is quickly evaporated to realize distillation, separation and purification.As a high efficiency evaporation tool in laboratory, the equipment has the characteristics of large capacity, high efficiency evaporation, simple operation, stability and reliability, and has been widely used in many fields of laboratory. When using the equipment, the experimental personnel should pay attention to the operation method and use precautions to ensure the accuracy and reliability of the experimental results.
In chemical experiments, 5 liter rotovap is mainly used for large-scale sample processing, such as Chinese herbal medicine extraction, concentration and separation of chemical raw materials. By using the rotary evaporator, high-purity products can be obtained quickly and efficiently, and the efficiency and effect of the experiment can be improved.
We provide Rotary Evaporators, please refer to the following website for detailed specifications and product information.
Product: https://www.achievechem.com/chemical-equipment/rotary-evaporators.html
Introduction
It is driven by a rotary motor, which usually consists of a motor, a reducer, a power transmission shaft and a rotary clamping device. Among them, the motor provides power, the reducer converts the high-speed rotation of the motor into appropriate low-speed rotation, the power transmission shaft transmits the rotation speed to the rotating clamping device, and the rotating clamping device transmits this rotation force to the rotating flask.
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The rotary clamping device usually consists of two clamping arms and clamping claws. The clamping claws clamp the flask in the middle position, and the clamping arms are connected with the power transmission shaft, so that the power of the rotary motor can be transmitted to the rotary flask through the clamping arms, thus realizing the rotation of the flask.
During the experiment, the rotating speed of the rotary flask needs to be adjusted according to the experimental requirements, generally between 100 and 300 rpm. The increase of rotating speed can increase the surface area of the solution and promote the evaporation of the solvent, but too fast rotating speed can also cause the sample to splash or the beaker to tilt, so it needs to be adjusted according to the actual situation.
The hot oil used for heating the rotary evaporator equipment is high-temperature thermal conductivity oil. This thermal conductivity oil has high thermal stability and thermal conductivity, is suitable for high-temperature heating system, and can stably transfer heat at higher temperature.
Common high-temperature thermal conductivity oils include: diphenyloxy diphenyloxy phosphine (Dowtherm A), triphenyloxy triphenylphosphine (Dowtherm J), Diphenyl ether, etc. |
operating principle
● Heating system:
Rotovap is usually equipped with a water bath or oil bath as a heating system, which heats the solvent in the sample bottle to evaporate. The heating temperature can be precisely adjusted by microcomputer PID control system to meet the evaporation needs of different solvents.
● Rotating system:
The bottle is mounted on a rotating shaft and rotated by a motor drive. The rotation speed can usually be adjusted within a certain range (such as 10-140rpm or 20-200rpm, etc.), depending on the device model and experimental requirements. The rotating motion helps to increase the evaporation area of the solvent on the inner wall of the sample bottle, thus improving the evaporation efficiency.
● Condensing system:
The evaporated solvent vapor is condensed by a condenser. The condenser usually adopts a serpentine coil structure (such as straight or inclined) to increase the condensing area and condensing efficiency. The cooling medium in the condenser (such as water or refrigerant) absorbs the heat of the steam by circulating it and condenses it into a liquid.
● Vacuum system:
The Rotovap is usually connected to a vacuum pump to create a negative pressure environment inside the device. The negative pressure environment helps to reduce the boiling point of the solvent, thus achieving rapid evaporation of the solvent at lower temperatures. In addition, the vacuum environment can also reduce the oxidation and decomposition of solvents during evaporation.
● Collection system:
The condensed solvent liquid flows into the recovery bottle for collection. Recovery bottles usually have sufficient capacity to contain the solvent that evaporates throughout the experiment.
Operation Knowledge
Control the sample amount
- According to the needs of the experiment, accurately measure the required amount of samples, and use appropriate tools (such as burette and syringe) to add samples.
- Control the sampling speed to avoid too fast or too slow sampling speed. The sampling speed can be controlled by manually adjusting the sampling speed or using an automatic sampling device.
- Leave a certain space before adding samples to avoid solution overflow. According to the nature of the sample and the volume of the container, reasonably determine the sample addition amount to avoid exceeding the bearing capacity of the container.
Observe the state of the solution
- During the experiment, observe the state of the solution at any time, especially during the sample adding process. If it is found that the solution is close to the overflow edge, stop the sample addition immediately and adjust the rotation speed or reduce the sample addition.
- Pay attention to the tightness of the flask, ensure the tight connection between the flask and the rotating clamping device, and avoid solution leakage.
Adjust according to experimental experience
- According to the previous experimental experience and results, gradually master the appropriate rotation speed and sample addition to avoid solution overflow or waste.
- If overflow occurs during the experiment, it should be recorded and adjusted in time to improve the accuracy of the next experiment.
Test Method
Chromatography
- Gas Chromatography (GC): It is suitable for detecting the evaporation effect of volatile substances, such as volatile organic compounds. Samples before and after evaporation were collected and analyzed by gas chromatograph. Compare the changes of peak area or peak height of substances before and after evaporation to evaluate the evaporation effect.
- Liquid Chromatography (LC): It is suitable for detecting the evaporation effect of non-volatile substances, such as water-soluble compounds. Samples before and after evaporation were collected and analyzed by liquid chromatography. Compare the changes of peak area or peak height of substances before and after evaporation to evaluate the evaporation effect.
Spectroscopy
- Ultraviolet-visible spectrum (UV-Vis): It is suitable for detecting the evaporation effect of absorbent substances in solution when using a 5 liter rotovap. Samples before and after evaporation were collected, and the absorption spectrum was measured by UV-Vis spectrometer. Compare the changes of absorbance before and after evaporation to evaluate the evaporation effect.
- Infrared spectrum (IR): It is suitable for detecting the evaporation effect of functional groups in solution. Samples before and after evaporation were collected, and the infrared spectrum was measured by infrared spectrometer. Compare the changes of peak intensity or position before and after evaporation to evaluate the evaporation effect.
Safety precautions during equipment inspection and preparation phase
5L rotary evaporator as a common equipment in the laboratory, its equipment inspection and preparation stage safety precautions are very important. The following is a detailed explanation of the safety precautions at this stage to ensure the safety of the experimenter and the normal operation of the equipment.
Equipment integrity check
Inspection of glass parts
Carefully check whether the glass components such as evaporating bottles and condensing tubes are intact and without cracks or damage. These components are the core part of the rotary evaporator, once damaged, not only will affect the experimental results, but also may cause safety accidents.
Inspection of sealing parts
Check whether sealing parts such as sealing rings and joints are in good condition without aging or wear. The effectiveness of sealing components is directly related to the vacuum degree and air tightness of the equipment, which affects the evaporation efficiency.
Electrical parts inspection
Ensure that electrical components, such as power cables and plugs, are intact and connected securely. At the same time, check whether the power switch and indicator light are working properly to ensure the safety of the electrical system.
Equipment installation and commissioning
Installation location selection
Place the rotary evaporator on a smooth, well-ventilated test bench to ensure that there is enough space around the equipment for easy operation and maintenance. At the same time, avoid placing the device in a humid or high temperature environment to prevent damage to the device.
Interface running-in and lubrication
When installing the interfaces, sealing surfaces, sealing rings and joints, apply a layer of vacuum grease to ensure air tightness. At the same time, properly tighten the interfaces to avoid connector damage.
Vacuum system inspection
Before starting the vacuum pump, check the integrity of the vacuum system, including the vacuum tube, vacuum gauge and other components. Ensure that the vacuum system does not leak to ensure the smooth evaporation process.
Heating system inspection
Check the water level in the heating tank to ensure that the water level is moderate to avoid dry burning. At the same time, it is confirmed that the heating system works normally and the heating temperature can be accurately controlled.
Personal protection and safety operation
Personal Protective equipment
During the equipment inspection and preparation phase, the experimenter should wear appropriate personal protective equipment, including protective gloves, goggles, protective clothing, etc. These devices can effectively protect against damage caused by hot steam, chemical solvents or glass fragments.
Safety operation specification
When operating the rotary evaporator, safety operation procedures should be strictly observed to avoid safety accidents caused by misoperation. For example, before starting the equipment, ensure that all components are properly installed and secured; When turning off the equipment, the heating system should be turned off first, and then the vacuum should be released.
Emergency response measures
Familiar with the position and use of the emergency stop button of the rotary evaporator, so that in the event of an emergency, the power can be quickly cut off to prevent the situation from expanding. At the same time, understand the location and use of fire equipment in the laboratory to ensure that in the event of fire and other unexpected situations can be quickly responded to.
Equipment cleaning and maintenance
Equipment cleaning
The rotary evaporator should be cleaned before and after each use to remove residues and stains. In particular, evaporation bottles, condensing tubes and other parts should be washed and wiped with appropriate solvents to ensure the internal cleaning of the equipment.
Regular maintenance
Perform regular maintenance on the rotary evaporator, including replacing worn seals, cleaning vacuum pumps, etc. These maintenance work helps to improve the stability and service life of the equipment.
In summary, the safety precautions of the equipment inspection and preparation stage of the 5L rotary evaporator cover many aspects such as equipment integrity inspection, equipment installation and commissioning, personal protection and safety operation, and equipment cleaning and maintenance. The implementation of these precautions will help ensure the safety of experimental personnel and the normal operation of equipment, and improve the efficiency and accuracy of the experiment.
Conclusion
In conclusion, the 5-liter Rotovap is a versatile and efficient tool that plays a crucial role in various industries. Its robust construction, precise temperature and pressure control, adjustable rotation speed, and safety features make it an invaluable asset for researchers, scientists, and engineers. By understanding the features, applications, and benefits of the 5-liter Rotovap, professionals can optimize their processes, improve efficiency, and achieve high-quality results. As technology continues to advance, the Rotovap industry is likely to see further innovations and improvements, making these tools even more powerful and user-friendly in the future.
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