50l Crystallizer Manual Lifting Rotary Evaporator Machine

As a common and essential evaporation evaporator, the RE-5003 Rotary Evaporator is widely used in many fields. The rotary flask's volume can reach 50L, and the receiving flask's volume can approach to 30L. The rotating speed is 0-90r.p.m, and the motor power is 250W. It adopts the double condensers(main and vice condensers), having a better condensation effect and higher recovery rate. The parts exposed to matrials are made of heat resistant materials that are high borosilicate glass and PTFE material. And the rotary evaporator works under the vacuum condition. Owing to the above factors, it's especially suitable for the concentration, crystallization, separation and solvent recovery of the thermal sensitive material, corrosive material and metal material like the stainless steel.

Product Features:

1. Full PTFE discharge valve can keep high vacuum degree of the system effectively.

2. The continuous charging and recycling can be realized.

3.  Lifting water and oil universal bath with intelligent digital display is made of stainless steel and takes shape only once. The inner pot has no welding, and the annular heating tubes are heated evenly, which contribute to a faster heating rate.

4. High-efficiency serpentine condenser pipe is made from high borosilicate glass and takes shape once, which has a good condensing effect and high recovery rate.

5. High quality stainless steel prow is adopted, which can realize frequency control. 

6. There is a vacuum gauge in the vacuum system so that the optimum vacuum degree can be chosen to low the boiling point of the material.

7. The dry burning prevention function and the safe temperature loop are available;
8. The equipment can start smoothly and realize positive and negative inversion operation;
9. It's excellently durable. The plate bursting disk glass componnet can be chosen according to customer needs.

10.  In the case of sudden power failure in the operation of the equipment, it can stop heating automatically when turning on the power again.

1. The vacuum environment required by the rotary evaporator can be provided by the circulating water vacuum pump.

2. The rapid temperature adjustment can be satisfied by the GDSZ series high andlow temperature circulating pump.

3. The low temperature environment can be maintained by the DLSB series low temperature coolant circulating pump.

1. Q: What's the working principle of a rotary evaporator?
   A:  The principle is that the boiling points of liquids can reduce with the decreasing pressure. As a result, the solvents are capable of being vaporized at much lower temperature than their boiling points at the normal pressure.During the operation, the rotating flask is heated thermostatically and can rotate at a constant speed. Then the material forms a large area of thin film on the inner surface of the flask. The solvent vapor is recycled in the collecting bottle after being cooled by high-efficiency glass condenser.
2. Q: What's the feature of rotary evaporator comparing to other evaporators?
   A: Compared to other evaporators, the rotary evaporator is compact, efficient and easy to observe, with no metal ion pollution. It's used for laboratory test, pilot production and the extraction of valuable materials. The sealing performance is comparable to those made in foreign countries. But the appearance and the humanization design still have some room for improvement.
3. Q: How about the anti-explosion ability of R series Rotary Evaporator?
   A: The R Series Rotary Evapoarator has an excellent anti-explosion performance. The reasons can be concluded as follows. The AC motor and stepless-speed regulation (or frequency control) are adopted, without the electric brush and spark in operation. The control of the matching water bath kettle adopts nitrogen-sealed relay, silicon-controlled non-contact tip switch and vacuum switch. The manual control switch adopts twice circuit control, which makes the electric current less than 3mA and the great anti-explosion performance is available.
4. Q: What factor decides the working efficiency of Rotary Evaporator?
   A: For products of the same specification, the major factors include the steam temperature, the vacuum degree and the cooling water temperature. Restricted by bad heat resistance of some materials, the steam temperature cannot be improved indefinitely while working. Hence, the high vacuum degree and low cooling water temperature are two main factors to improve the working efficiency. (The cryopump can be selected to lower the temperature.)
5. Q: What's the key technology of a rotary evaporator?
   A: The gas tightness of the system is the key point. The system can maintain a high vacuum degree under any circumstance, whether the solvent is corrosive or it moves unstably. Henan Lanphan' s R series instrument adopts a double seal by using both PTFE and rubber, which possesses a reliable gas tightness. It is capable of standing all sorts of solvents and maintaining a high vacuum degree above -0.096MPa.
6. Q: What's the difference between vertical and inclined condenser?
   A: Compared to the inclined condenser, the vertical condenser is much more well-received result from its smaller occupation and more convenient transportation, and it's usually adopted by high-capacity instrument. But in essential, it can be said that there is no difference between them.
7. Q: What is the basis for the design of the lifting main engine and lifting water bath?
   A: The convenience, safety and economy are taken as the principles. Internationally, small-size rotary evaporators below 5L use the lifting main engine and evaporators above 5L adopts the lifting water bath.
8. Q: How to select a proper vacuum pump for a rotary evaporator?
   A: The water circulating vacuum pump is strongly recommended by us, which can not only stand all sorts of solvent corrosion but also can vacuumize to -0.095MPa(to meet using requirements). According to the solvent volume, various types of vacuum pumps can be provided.
9. Q: How to select all kinds of rotary evaporators?
   A: The rotary evaporators with various volumes are applicable for different situations. Hence, all kinds of rotary evaporators can be selected properly in terms of their different volumes. According to the solvent volume, 2L, 3L, 5L's machine is fit for lab and sample test; 5L, 10L, 20L's machine is fit for medium experiment; 20L, 50L's machine is fit for medium experiment and production, especially suitable for the extraction of metal ion-avoiding polluted material.