Rotary Evaporator Overview

The Refurbished Buchi Rotary Evaporator R-II is a widely used laboratory instrument designed for solvent removal, distillation, and sample concentration. It is especially useful in chemical, pharmaceutical, and research laboratories where precise evaporation under controlled temperature and vacuum conditions is required.

This system uses a rotating flask mechanism combined with a heated water bath and condenser unit to efficiently evaporate solvents while minimizing thermal degradation of sensitive samples.

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Working Principle

A Rotary Evaporator works on the principle of:

• Reduced pressure (vacuum)
• Controlled heating
• Rotational motion

Process:

Sample is placed in a rotating flask
Rotation increases surface area for evaporation
Water bath provides controlled heat
Vacuum lowers boiling point
Vapors condense in condenser
Solvent is collected in receiving flask

This ensures fast and efficient solvent removal.

Learn more about evaporation techniques:
👉 https://en.wikipedia.org/wiki/Rotary_evaporator

Technical Specifications

• Model: Buchi R-II
• Type: Rotary Evaporator
• Rotation Speed: Adjustable
• Heating Bath: Digital temperature control
• Temperature Range: Typically up to 180°C
• Condenser Type: Vertical glass condenser
• Vacuum Compatibility: Yes
• Flask Size: Multiple compatible sizes
• Lift Mechanism: Manual/Electric (variant-based)
• Material: Chemical-resistant glass & metal

For reference:
👉 https://www.buchi.com

Key Components

• Evaporation Flask (Rotating flask)
• Condenser (cooling unit)
• Receiving Flask
• Heating Water Bath
• Motorized Rotation Unit
• Vacuum Connection System

Each component plays a critical role in efficient evaporation.

Key Features of Rotary Evaporator

• Efficient solvent evaporation under vacuum
• Gentle evaporation for heat-sensitive samples
• Adjustable rotation speed
• Precise temperature control
• Chemical-resistant construction
• Easy operation and maintenance

Applications of

The Buchi Rotary Evaporator is used in:

• Chemical laboratories
• Pharmaceutical research
• Food and flavor industries
• Environmental analysis labs
• Academic and R&D labs

Common uses:

• Solvent removal
• Distillation
• Sample concentration
• Extract preparation

Performance & Benefits

• Faster evaporation compared to traditional methods
• Reduced solvent loss
• Improved safety with controlled conditions
• High recovery efficiency
• Consistent and repeatable results

Product Condition

Condition: Refurbished
Status: Fully tested
Performance: Verified
Inspection: Cleaned & calibrated

Why Choose This Rotary Evaporator

Choosing this Rotary Evaporator gives you:

• Trusted Buchi engineering
• Reliable lab performance
• Cost-effective alternative to new systems
• Suitable for multiple applications

Perfect for labs needing efficient evaporation systems at a lower cost.

solvent evaporation system

Refurbished Buchi Rotary Evaporator R-II – Laboratory Solvent Evaporation System