Overview

A benchtop rotary evaporator is a compact laboratory instrument that removes solvents from samples by evaporating them under reduced pressure. Widely used across pharmaceutical, chemical, and academic settings, a rotary evaporator—also called a vacuum evaporator or rotary vacuum evaporator—enables controlled concentration, distillation, and solvent recovery without exposing heat-sensitive compounds to excessive temperatures.

Unlike large industrial units, a lab rotary evaporator fits comfortably on a standard bench. This makes it accessible for smaller research teams while delivering the same process efficiency found in larger setups. The Fison FM-BRE-A107 is one such model, offering a range of features suited to diverse laboratory workflows.

Key Features FM-BRE-A107

Key Features of the Fison FM-BRE-A107 Benchtop Rotary Evaporator showing LCD display, PTFE sealing, electric lift, motorized rotation, dual bath and compact design

LCD Display Panel

Real-time monitoring of temperature and rotation speed for precise process control.

Electric Lifting Mechanism

120 mm travel allows smooth, hands-free flask positioning during operation.

PTFE Sealing System

Maintains consistent benchtop rotary evaporator vacuum levels throughout the run.

Dual Bath Compatibility

Water bath (RT–99°C) and oil bath (RT–180°C) options cover a wide range of solvents.

Compact Benchtop Design

Fits standard lab benches without requiring rearrangement of surrounding equipment.

Motorized Rotation

Adjustable up to 200 rpm for uniform thin-film formation and efficient evaporation.

Technical Specification Data — FM-BRE-A107

Parameter	Value
Rotation Speed	0 – 200 rpm
Evaporating Flask	3 L (φ 195 mm)
Receiving Flask	2 L (φ 166 mm)
Water Bath Range	RT to 99°C
Oil Bath Range	RT to 180°C
Temperature Accuracy	±1°C
Vacuum Degree	0.098 MPa
Condensing Area	0.26 m²
Bath Capacity	7.9 L
Lift Type	Electric (120 mm travel)
Display	LCD (temperature & speed)
Power Supply	220–240 V / 50 Hz
Total Power	1260 W
Dimensions	690 × 490 × (810–930) mm
Weight	21.5 kg

Compliance & Standards

ISO 9001IEC 61010-1EN 61010-2-010CE MarkedRoHS

How It Works

The Evaporation Process Explained

A rotary vacuum evaporator combines four interconnected mechanisms. Understanding each step helps operators set the right parameters and avoid common errors.

Rotation

The evaporating flask spins continuously, spreading the sample as a thin film along the inner glass wall. Greater surface exposure means faster, more uniform solvent removal.

Heating

The bath supplies controlled thermal energy. The benchtop rotary evaporator temperature is adjusted based on the target solvent's boiling point, protecting sensitive compounds from degradation.

Vacuum

A vacuum pump for rotary evaporator reduces internal pressure, which lowers the boiling point of solvents significantly. This allows evaporation at temperatures that would otherwise damage heat-sensitive materials.

Condensation

Solvent vapors travel through a cooled condenser, return to liquid state, and collect in the receiving flask. The recovered solvent can then be reused or disposed of properly.

Applications

Where a Laboratory Rotary Evaporator Is Used

The range of laboratory evaporator applications spans multiple industries. Each sector relies on the same core principles but applies them to different sample types and process goals.

Pharmaceutical Laboratories

Drug formulation, active ingredient purification, and solvent removal from reaction mixtures. The closed system reduces vapor exposure during sensitive preparations.

Chemical Industry

Solvent recovery from synthesis reactions and distillation of intermediate compounds. A rotary vacuum distiller setup reduces material waste significantly.

Academic & Research Labs

Organic chemistry experiments, sample preparation for chromatography, and teaching labs where controlled evaporation is a core technique.

Food & Beverage Testing

Flavor compound extraction, concentration of natural extracts, and preparation of samples for quality testing and analysis.

Environmental Analysis

Concentration of water or soil samples prior to contaminant testing. Reduced-pressure evaporation preserves volatile analytes that might otherwise be lost.

Hospital & Clinical Labs

Preparation of biological extracts and concentration of trace compounds in diagnostic sample workflows.

Advantages

The six core advantages shown above reflect practical laboratory priorities: accuracy, throughput, flexibility, ease of use, space efficiency, and operator safety. These are not abstract claims—each maps directly to a hardware decision in the FM-BRE-A107's design, from its PTFE sealing system to its closed vapor pathway.

Why FM-BRE-A107

Practical Strengths for Everyday Lab Work

Selecting a lab rotary evaporator often comes down to workflow compatibility. The Benchtop Rotary Evaporator FM-BRE-A107 addresses common lab points directly.

PTFE seals for sustained vacuum integrity

Dual bath for broad solvent compatibility

0.26 m² condensing area for fast recovery

Electric lift for one-hand flask changes

±1°C accuracy for reproducible results

Compact footprint, no major bench rework

Maintenance & Safety

Keeping Your Laboratory Evaporator in Good Condition

Proper upkeep extends instrument life and keeps results consistent. The tips below apply to most Benchtop Rotary Evaporator FM-BRE-A107 models, including the FM-BRE-A107.

Regular Cleaning

Rinse flasks, condenser, and bath after each session. Residue buildup affects evaporation efficiency and can contaminate the next sample.

Check PTFE Seals

Inspect seals before each run. Worn or cracked seals reduce benchtop rotary evaporator vacuum performance and can lead to inconsistent results.

Match Temperature to Solvent

Set the benchtop rotary evaporator temperature according to the specific solvent's boiling point at your working vacuum level—not just its atmospheric boiling point.

Avoid Overfilling Flasks

Keep the sample volume below 50% of the flask capacity. Overfilling risks bumping, which can push the sample into the condenser or receiving flask.

Inspect the Vacuum System

Check that the vacuum pump for rotary evaporator is operating within spec and all tubing connections are secure before each use.

Use Appropriate Safety Gear

Operate within recommended parameters and wear appropriate PPE. The closed-system design limits vapor exposure but does not eliminate the need for standard lab precautions.

FAQ — Rotary Evaporator Basics

A benchtop rotary evaporator is used to remove solvents from liquid samples efficiently and gently. By combining rotation, controlled heating, and reduced pressure from a vacuum pump, it evaporates solvents at lower temperatures than would otherwise be possible—protecting heat-sensitive materials throughout the process.

Reducing internal pressure lowers the boiling point of solvents. For example, ethanol boils at 78°C at atmospheric pressure but evaporates at much lower temperatures under vacuum. This allows the rotary vacuum evaporator to handle thermally fragile compounds—such as natural extracts or pharmaceutical intermediates—without degradation.

The vacuum pump for a rotary evaporator should match the required vacuum degree for your target solvents. Diaphragm pumps are chemical-resistant and low-maintenance, making them a common choice for general lab use. Rotary vane pumps offer deeper vacuum for solvents with very low boiling points. Confirm compatibility with the evaporator's specifications before connecting.

The correct benchtop rotary evaporator temperature depends on the solvent being removed and the vacuum level being applied. A general starting point is to set the bath temperature 15–20°C above the solvent's boiling point at your working vacuum. The FM-BRE-A107's ±1°C accuracy allows precise adjustment once conditions are established.

Yes. The FM-BRE-A107 supports an oil bath ranging from room temperature to 180°C, which covers solvents with higher boiling points commonly found in oil-based preparations. Always use a heat-stable bath oil rated for your target temperature range, and monitor the bath level regularly during prolonged runs.

Bumping occurs when a sample superheats and suddenly releases a large vapor bubble, pushing liquid up toward the condenser. Common causes include overloading the flask, applying vacuum too quickly, or using too high a bath temperature. To reduce risk: fill flasks to no more than 50% capacity, apply vacuum gradually, and start with a moderate rotation speed before increasing heat.

Seal replacement frequency depends on usage intensity and the solvents processed. For labs running daily sessions, a visual inspection before each use is recommended. Signs of wear include visible cracking, loss of vacuum hold during startup, or visible discoloration. Replacing seals at the first sign of wear prevents vacuum loss and cross-contamination between samples.

Explore the FM-BRE-A107

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