Rotary Evaporator

Rotary Evaporator

Rotary Evaporators (Rotary Vacuum Evaporators / Rotary Film Evaporators) are precision glass process systems designed for gentle, efficient solvent evaporation under reduced pressure. By lowering the boiling point of solvents, these systems enable safe processing of heat-sensitive materials with high recovery efficiency.

Manufactured using borosilicate glass 3.3, rotary evaporators are widely used in chemical, pharmaceutical, biotech, food, academic, and pilot plant environments for solvent removal, concentration, purification, and recovery.

Compact rotary evaporators suitable for laboratory and pilot-scale operations, offering controlled rotation, uniform heating, and efficient condensation. Ideal for routine solvent removal, concentration, and extraction workflows.

Working Principle of Rotary Evaporator

A rotary evaporator operates by combining vacuum, rotation, and controlled heating:

• The sample is placed inside a rotating evaporation flask.
• A vacuum system reduces internal pressure, lowering the solvent boiling point.
• The flask rotates, forming a thin liquid film on the inner wall.
• Gentle heating from a water or oil bath accelerates evaporation.
• Vapors pass through a condenser, where they liquefy.
• The condensed solvent is collected in a receiver flask.

This method ensures fast evaporation without thermal degradation, making it ideal for sensitive compounds.

Main Components

• Motorized rotation unit
• Borosilicate glass evaporation flask
• Heated water / oil bath with lifting mechanism
• High-efficiency condenser (single / double coil)
• Receiver flask
• Vacuum connection (pump optional)
• Support frame (SS / MS powder-coated)

Advantages of Rotary Evaporators

•  Rapid and gentle solvent evaporation
• Thin-film formation for efficient heat transfer
• Reduced bumping and foaming
• Low operating temperature
• High solvent recovery
• Excellent visibility of process
• Suitable for heat-sensitive materials

Technical Specifications – Standard Models

Model	Flask Capacity (L)	Speed (RPM)	Motor Rating	Condenser Area	Receiver (L)	Power Supply	Bath Rating
GRFE-2	2	0–80	40 W	0.15	1	230 V / 50 Hz	2
GRFE-3	3	0–80	40 W	0.15	1	230 V / 50 Hz	2
GRFE-5	5	0–80	40 W	0.15	2	230 V / 50 Hz	2
GRFE-10	10	0–80	0.25 HP	0.20	5	230 V / 50 Hz	4
GRFE-20	20	0–80	0.25 HP	0.30	10	230 V / 50 Hz	4
GRFE-50	50	0–80	0.25 HP	0.50	20	230 V / 50 Hz	6

Optional Accessories (Cross-Sell Products)

•  Vacuum Pump (Single / Two-stage)
•  Chiller / Recirculating Cooling System
•  Digital Vacuum Controller
•  Cold Trap
•  Vacuum Receiver Assembly
•  Thermic Fluid Heating Bath
•  Explosion-proof motor option
•  PTFE seals & spare glassware set

(These accessories are sold separately and compatible across multiple product lines)

Applications

• Solvent recovery
• Sample concentration
• Natural product extraction
• Organic synthesis
• Pharmaceutical intermediates
• Food & aroma extraction
• Wastewater evaporation
• Academic & R&D laboratories

Why Choose Our Rotary Evaporators

•  Precision-engineered borosilicate glass
•  Robust mechanical design
•  Modular & service-friendly construction
•  Scalable from lab to production
•  Technical support & customization
•  Competitive pricing with export-ready quality