3L 5L rotary evaporator for sale
The working principle of the rotary evaporator:
Under vacuum conditions, the bath is heated at a constant temperature and the rotating bottle rotates at a constant speed, so that the material forms a large-area film on the bottle wall, and the solvent in the material is efficiently evaporated. The solvent vapor is cooled by the glass condenser and recovered in the collection bottle, which greatly improves the evaporation efficiency. Because the temperature of the water bath of the rotary evaporator is relatively low, it is especially suitable for the concentration, crystallization, separation, solvent recovery, reflux extraction, etc. of biological products that are easily decomposed and denatured at high temperatures.
Parameters of the rotary evaporator:
Model |
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Evaporating Flask（L） |
2 |
3 |
5 |
Receiving Flask（L） |
1 |
2 |
3 |
Rotating Motor(W) |
40(Stepless speed regulation) |
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Rotating Speed(R/min) |
0-120 |
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Water（Oil）Bath Power(W) |
1200 |
1500 |
|
Temp Control Mode/Range |
Intelligent digital/RT-399℃ |
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Temp Resolution |
±2℃ |
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Evaporation Rate(L/H2O) |
≥1 |
≥1.5 |
≥1.5 |
Max. Vacuum Degree |
＜133pa(1.33mbar,1Torr,0.098Mpa) |
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Lifting Height（mm) |
0-150 |
0-120 |
0-120 |
Water Bath Size |
Φ24*15 |
Φ26*15 |
Φ28*17 |
Condenser |
Vertical with charge pipe, large condenser,evaporating pipe |
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Lifting Mode |
Oil bath Manual Lifting |
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Voltage |
220V/ 50 HZ |
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Sealing Mode |
PTFE,fluoro rubber sealing |
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How to use a rotary evaporator?
Use the water bath lifting handwheel to lower the water bath, install the evaporation flask, and then use the water bath lifting handwheel to raise the water bath; turn on the condensed water, open the vacuum pump valve, and check whether the vacuum meter index is within the specified range; Cock to make it in the open state, and use a rubber tube to pump in the material liquid (the amount of material liquid should not exceed half of the volume of the rotary evaporating bottle); after the material is pumped, close the material suction port; adjust the bath to an appropriate height, usually with a rotary bottle It is advisable to immerse 1/2 to 1/3, so that the height of the water (oil) bath can balance the weight of the rotating bottle with buoyancy; press the rotation start button to start rotating, adjust the knob from slow to fast, and the best speed can avoid Water bath resonance fluctuation is appropriate; press the heating button and adjust the temperature adjustment button to adjust to the required temperature; rotate the large collection bottle valve, the condenser is connected with the large collection bottle, so that the evaporated solvent flows into the bottle; large collection When the bottle is almost full, close the compound valve and open the compound valve of the small collection bottle to connect the condenser to the other small collection bottle; at the same time, open the auxiliary valve in the compound valve on the large collection bottle to empty the large collection bottle. Open the material valve and discharge the collected liquid. Large and small collection bottles can be used alternately to ensure continuous operation. The rotary evaporator can be continuously fed: rotate the feeding cock to open it, and then use a rubber tube to draw in. After the evaporation is complete, turn off the heating button and the vacuum pump, use the water bath lifting handwheel to lower the water bath, remove the rotating bottle, or pass the PTFE tube through the small hole on the distillation bottle, and use the negative pressure to suck the solution in it. To avoid frequent disassembly of the rotating bottle.
