DW-5250A Large Capacity Floor Type Rotary Evaporator

DW-5250A is a floor-standing rotary evaporator designed for large-volume evaporation, concentration and solvent-recovery workflows. It combines automatic cantilever lifting, a large-area condenser, vacuum operation and continuous collection-bottle discharge for pilot-scale and high-volume laboratory processing.

  • 5–50 L Flask Capacity
  • Max. 9 L/h H₂O
  • 10–120 rpm Rotation Speed
  • 2.0 m² Condenser
  • RT–99°C ±1°C Water Bath
  • RT–180°C ±2°C Oil Bath

Features of DW-5250A

  • Upgraded version of large screen LCD screen, integrated multifunctional operating system monitoring display, menu interface and knob data input make the setting operation intuitive and convenient.
  • Sealing unit: Imported PTFE and special synthetic materials are processed and synthesized by special process technology to enhance sealing, corrosion resistance and wear resistance.
  • Pressure retaining valve device: under the condition of not affecting the pressure operation of the equipment system and sample distillation, the recovered solution in the collection bottle can be continuously discharged at the same time.
  • Safety protection function: set with over current, overload protection, fuse, heat sensing dry burning preventer, equipment abnormal, over temperature automatic power off, standby early warning protection.
  • A disposable molded Teflon heating pot with corrosion resistance, high temperature resistance, and easy cleaning was used to avoid cross contamination during the experiment.
  • Vertical, integral three-reflux large-diameter condenser not only has large cooling area, strong evaporation capacity, but also is easy to install.
  • Automatic lifting function: the safe distance limit is set, and the lifting is stable, convenient and quick.
  • Equipped with transparent protective cover (heat preservation, energy saving, explosion proof, splash proof)

Continuous Solvent Collection

The pressure-retaining valve allows recovered liquid in the collection bottle to be discharged while the evaporation system remains under operating pressure, reducing the need to stop the distillation process simply to empty the receiving bottle.

Continuous Solvent Discharge

Applications of DW-5250A

Pharmaceutical API Research

Pharmaceutical & API Research

Reaction mixtures, API intermediates, solvent extracts, purified fractions

Chemical Fine Chemical Synthesis

Chemical & Fine Chemical Synthesis

Organic reaction mixtures, chemical intermediates, reagent solutions, synthesis fractions.

Natural Products Herbal

Natural Products & Herbal Extraction

Plant extracts, herbal extracts, botanical fractions, natural-product solutions.

Food Flavor Agricultural Research

Food, Flavor & Agricultural Research

Fruit extracts, food extracts, flavor solutions, plant and agricultural extracts.

Solvent Recovery

Solvent Recovery

Ethanol solutions, methanol solutions, acetone mixtures, reusable solvent fractions.

Pilot Process Development

Pilot & Process Development

Scale-up batches, process solutions, concentrated extracts, pilot production fractions.

Safety Protection

  • Over-Current Protection
  • Overload Protection
  • Fuse Protection
  • Dry-Heating Protection
  • Over-Temperature Auto Power-Off
  • Standby Warning Protection

FAQ

The applicable sample flask range is 5–50 L.

The specified evaporation capacity is 9 L/h for water.

Rotation speed is adjustable from 10–120 rpm.

The internal vacuum is specified as 1–8 mbar.

The large-diameter condenser provides a 2.0 m² cooling area.

Yes. The automatic cantilever lift has a 0–180 mm stroke.

Yes. The pressure-retaining valve allows liquid in the collection bottle to be discharged without interrupting system pressure or distillation.

An external vacuum controller is optional, with a specified control range of 0–1013 mbar.

Specifications of DW-5250A

ModelDW-5250A
HostAutomatic cantilever lift 0-180 mm
Evap. CapacityMaX.9L/H(H2O)
SpeedLCD screen display 10~120 RPM
VacuumThe vacuum inside the device can reach 1-8mbar
Optional external vacuum controlVacuum controller (arbitrary control experiment required vacuum degree, setting range: (0~ -0.1Mpa) 0~1013mbar; Accuracy ±1); Realize program control.
TemperaturePID automatic temperature control, LCD display, water bath: room temperature ~99 degrees ±1℃; Optional oil bath (room temperature ~180℃±2℃)
MaterialDisposable molding Teflon 304 stainless steel heating pot,equipped with transparent protective cover
Sizeφ55×32cm
Heating power6KW
CoolerVertical, integral three reflux large diameter condenser’s cooling area is 2.0 square meters and designed with explosion-proof boiling glass elbow.
FeederValve feeding tube is sheathed with tetrafluoroethylene tube and water retaining ring
Sample bottle capacity range5~50L
Total power6.3KW
Factory configurationcollection bottles20L*1, φ95 flange mouth rotating bottles 50L *1
Sealing unitImported PTFE and special synthetic materials are processed and synthesized by special process technology to enhance sealing, corrosion resistance and wear resistance.
VoltageAC220/50Hz
Instrument size1345*770*2140mm
Weight140kg

Why Choose Us?

  • One-Station Shopping

“Multiple suppliers” have always been an issue in the procurement process. Drawell as a one-stop laboratory equipment and scientific instruments supplier, can perfectly solve this problem. In addition to manufacturing our own equipment, we also represent other laboratory equipment. Our product lines are rich and diverse at competitive prices. Provide one-stop service to customers.

  • Customer-centric Services

User Training – Training by Drawell skilled engineers about installation, debug tests, technical services, etc. It can happen in our factory in China, or at the site in the customers’ country. Cost depends on where and when the training happens.

  • Online Support

To discuss the problem and get it resolved, online chats, real-time video calls, and remote guidance. For the after-sales stage, our online technical guidance is free and ready forever.

  • 100% Quality Guarantee Policy

1 year free official warranty, including repairing quality-damaged parts, and offering replacements of selected parts (shipping cost is extra). 5% of the product price is charged for extending the warranty before the end of the official warranty.

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