20L Rotary Evaporator
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20L Rotary Evaporator

Model: PR-1050

TOP INSTRUMENT 20L Rotary Evaporator is an indispensable instrument and equipment for evaporation, concentration, crystallization, drying, separation, solvent recovery and other processes in the scientific research and production processes of pharmaceutical, chemical, biological products and other industries.
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  • PR-1050

  • TOP


• All parts in contact with the material are made of high borosilicate glass (expansion coefficient 3.3) and polytetrafluoroethylene, which have stable performance and are not prone to chemical reactions with the material, making it easy and safe to use.

• The main bracket is made of cold plate anti-corrosion spray plastic + aluminum alloy material, which has strong anti-corrosion and anti-oxidation characteristics. The pot bladder is made of 304 stainless steel, which is durable and beautiful in appearance.

• The sealing system adopts polytetrafluoroethylene + fluororubber compound sealing, which can maintain high vacuum.

• Oily vacuum pressure gauge displays real-time vacuum with pointer display.

• The piston-type feeding valve is connected to the PTFE extension tube, which can continuously feed the material to the evaporation bottle under vacuum, making it convenient for customers to use.

• Vertical three-layer serpentine coil condenser, main cooling + auxiliary cooling double condenser to ensure high recovery rate.

• Large LCD screen, controls rotation, heating and lifting at the same time, easy to operate, large viewing angle and clear viewing.

• The rotating motor is a brushless deceleration and power-increasing motor, which has no sparks and low noise; the lifting motor is also a deceleration and power-increasing motor.

• Bath pot constant temperature control, pot bottom PT100 sensor + stainless steel probe, fast and accurate temperature transmission.

• The bath pot can be lifted and lowered electrically. The bath pot is equipped with a silicone cover, which is heat-insulated and anti-scalding, and is safe to operate.

• Rotating and heating double fuses have high safety protection performance.

• The collection bottle has a lower discharge port and is connected to a glass + PTFE independent discharge valve. The solution recovery is very fast.

• There is a drain valve at the bottom of the pot for easy draining.

• Vacuum switching valve allows continuous collection and discharge without affecting the system vacuum and solution distillation.

• Over-temperature safety protection function, when the actual temperature exceeds the set temperature by 5℃, the machine will automatically cut off the power supply.

• Anti-dry function, when the water level in the heating pot is lower than the heating tube, the machine will automatically power off.

• If the power is suddenly cut off while the machine is working, the machine will automatically stop heating when the power is turned on again.

Voltage frequency


Total power


Rotating motor power


Lift motor power


Heating power


Vacuum degree


Rotary bottle capacity

50LΦ470mm/Φ125flange port

Collection bottle capacity

20LΦ355mm/upper Φ60 flange port*Φ35 flange port*2 pieces*lower Φ50 flange port

Spinning speed


Temperature control range

Room temperature -180℃

Temperature control accuracy


Bath pot lifting stroke


Condenser size

Main cooling Φ160*835H (mm) upper Φ60 flange port*lower Φ80 flange port

Auxiliary cooling Φ160*530H (mm) Upper Φ80 flange port*Lower Φ60 flange port*Side Φ60 flange port

Condensation area


Gas bottle

Left Φ35 flange port, upper Φ35 flange port, side Φ60 flange port, right Φ70 flange port

Dosing valve

Φ35 flange mouth, glass + PTFE valve, feed nozzle (pagoda joint) outer diameter 12mm

Multifunctional port

Φ35 flange mouth, glass + PTFE valve, glass nozzle (pagoda joint) outer diameter 12mm

Release valve

Φ35 flange port*2, glass + PTFE valve, air release nozzle (pagoda joint) outer diameter 12mm

Discharge valve

Φ50 flange mouth, side discharge nozzle (pagoda joint) outer diameter 20mm, 300mm off the ground

Vacuum suction head

Φ60 flange glass air extraction head, nozzle (pagoda joint) outer diameter 10mm

Condensation coil inlet and outlet circulation nozzle

Pagoda connector outer diameter 16mm

Pot size and capacity

Φ550*320H(mm) about 76L

The space occupied by the whole machine

1390*700*2300mm width, depth and height

Machine net weight


Package Size

1230*630*1420mm wooden box 1.1m³

Package weight


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ZHEJIANG TOP INSTRUMENT CO.,LTD., as a subsidiary of TOP Cloud agri, is a high-tech enterprise specializing in the R&D, manufacturing, sales for laboratory equipments, and provision of comprehensive laboratory solutions.


 +86-571-86059660
   11-12th Floor, 3rd Building, Xiangyuan Rd. China (Hangzhou) Wisdom Information Industry Park, Hangzhou, P.R.C 310015
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