Electric Lifting Rotary Evaporator LERE-T2035

Introduction

Electric features a 3000ml evaporating flask (standard) and 1000ml-2000ml options, with a 1000ml receiving bottle. It operates by heating the rotary flask at a constant temperature under vacuum, forming a large-area film on the flask’s wall for efficient evaporation. The solvent vapor is then condensed by a glass condenser and collected, improving evaporation efficiency. Ideal for concentration, crystallization, drying, separation, and solvent recovery in various industries.

This equipment is essential for solvent evaporation and concentration processes in chemical, pharmaceutical, and food laboratories. It features efficient heat transfer and vacuum control to ensure optimal distillation results while protecting sensitive samples.

Applications

Our Electric Lifting Rotary Evaporator is commonly used for concentration, crystallization, drying, separation, and solvent recovery in the pharmaceutical, chemical, and biopharmaceutical industries.

Specifications

Evaporating Flask	3000ml
Receiving Bottle	1000ml
Rotation Speed	0 to 200rpm
Rotation Control	Electric
Rotation Speed Setting	1 rpm/step
Water Bath Temperature	RT to 99°C
Oil Bath Temperature	RT to 180°C
Temperature Control Accuracy	±1℃
Lifting Distance	120mm
Environment Relative Humidity	≤70%
Bath Temperature Setting	0.1°C/step
Vacuum Leakage	≤0.33 kPa/min
Condensing Area	0.26m²
Bath Size	Φ255×155H mm
Volume	7.9L
Vacuum Degree	0.098MPa
Protection Grade	IP20
Sealing Parts
Glass Material	3.3 Borosilicate
Overall Power	1260W
Rotating Motor Power	40W
Lifting Motor Power	20W
Heating Power	1200W
Power Supply	220-240V, 50Hz
Dimensions	690 × 490 × (810 to 930) mm
Packaging Dimensions	620 × 620 × 490 mm
Net Weight	23.5kg
Gross Weight	28kg

Features

• + fluororubber double seal for high vacuum.
• Borosilicate glass 3.3 for strength and resistance.
• Dual fuses for added safety.
• Electric lifting.
• Double-coil condenser for high recovery.

FAQs

1. What vacuum level is appropriate for operating a rotary evaporator?

The appropriate vacuum level depends on the boiling point of the solvent being evaporated. For most common solvents, a vacuum level between 10-50 mbar is suitable. Lower boiling point solvents (such as ethanol) require higher vacuum (lower pressure), while higher boiling point solvents may need lower vacuum. It's important to adjust the vacuum level gradually to prevent sample bumping and ensure efficient evaporation.

2. How to prevent sample bumping during rotary evaporation?

To prevent sample bumping, you can: 1) Use a bumping tube or anti-bumping granules in the evaporating flask; 2) Control the heating bath temperature to avoid rapid temperature increase; 3) Adjust the rotation speed to ensure gentle mixing of the sample; 4) Gradually increase the vacuum level instead of applying full vacuum immediately; 5) Ensure the evaporating flask is properly centered and balanced.

3. How often should the rotary evaporator's seals be replaced?

The frequency of seal replacement depends on usage frequency, the type of solvents used, and maintenance practices. Under normal usage with non-corrosive solvents, seals should be inspected every 3-6 months and replaced if signs of wear, leakage, or reduced vacuum performance are observed. For corrosive solvents, more frequent inspection and replacement (every 1-3 months) may be necessary to maintain vacuum integrity.

4. Can the rotary evaporator be used for heat-sensitive samples?

Yes, the rotary evaporator can be used for heat-sensitive samples by utilizing the vacuum system to lower the solvent's boiling point, thus reducing the required heating temperature. For highly heat-sensitive samples, additional measures such as using a cold trap, lowering the heating bath temperature further, or reducing the rotation speed can help protect the sample from thermal degradation while maintaining efficient evaporation.

5. How to clean the rotary evaporator after use?

After use, follow these cleaning steps: 1) Turn off the heating bath and vacuum system, and allow the equipment to cool down; 2) Remove and empty the receiving flask; 3) Rinse the evaporating flask and condenser with an appropriate solvent (compatible with the sample residue); 4) For stubborn residues, use a soft brush or ultrasonic cleaner (if compatible with glass components); 5) Dry all components thoroughly before reassembly; 6) Wipe the exterior of the equipment with a clean, damp cloth.