RE-3000A Rotary Evaporator

Overview

The RE-3000A Rotary Evaporator is an engineered laboratory system designed for efficient solvent removal, concentration, and recovery under reduced pressure. Based on the fundamental principle of rotary evaporation—where a rotating flask increases surface area while simultaneous heating and vacuum application lower the boiling point of solvents—the RE-3000A delivers consistent, controllable performance in synthetic chemistry, pharmaceutical development, natural product isolation, and quality control laboratories. Its modular architecture integrates a motorized lift mechanism, digitally regulated rotational speed, PID-controlled water bath, and a high-efficiency vertical dual-flow condenser—all constructed from borosilicate glass (3.3) and chemically resistant materials to ensure long-term stability and traceability in regulated environments.

Key Features

• Motorized Vertical Lift: Precision-engineered 0–150 mm automatic升降 (up/down) movement enables safe, repeatable positioning of the evaporation flask relative to the heating bath—critical for method transfer and SOP compliance.
• Digital Speed Control: Stepless adjustment from 20 to 200 rpm with real-time LED display ensures optimal film formation and minimizes bumping across diverse solvent viscosities and boiling points.
• PTFE-Coated Heating Bath: Stainless steel bath with fused PTFE lining resists corrosion from acidic, basic, or halogenated media; fully enclosed 1.4 kW heating element provides uniform thermal distribution and rapid temperature stabilization (±0.5 °C at 60 °C).
• Vertical Dual-Flow Condenser: All-glass, high-surface-area condenser with standardized ground-glass joints (29/32 or 24/29) enables rapid vapor condensation and efficient solvent recovery—optimized for low-boiling solvents (e.g., diethyl ether, dichloromethane) and moderately volatile compounds (e.g., ethyl acetate, toluene).
• Vacuum-Optimized Sealing: Fluoroelastomer (FKM) gaskets maintain reliable vacuum integrity down to ≤10 mbar, supporting applications requiring precise pressure control such as thermolabile compound processing or fractional distillation protocols.
• Operator Safety & Ergonomics: Transparent polycarbonate safety shield, splash guard ring, and drip-resistant PTFE feed tubing mitigate exposure risk during solvent addition; non-slip base and balanced mechanical design reduce vibration-induced instability.

Sample Compatibility & Compliance

The RE-3000A accommodates standard round-bottom flasks (50–5000 mL), collection flasks, and condenser assemblies conforming to ISO 385 and ASTM E287 specifications for laboratory glassware dimensions and tolerances. Its construction meets IEC 61010-1 requirements for electrical safety in laboratory equipment. While not certified for GMP manufacturing use out-of-the-box, the system supports GLP-compliant documentation when integrated with validated vacuum controllers and temperature loggers. The PTFE-coated bath and FKM seals are compatible with USP Class VI materials testing criteria, making it suitable for pre-formulation studies in pharmaceutical R&D where extractables and leachables profiling is required.

Software & Data Management

The RE-3000A operates as a standalone analog-digital hybrid instrument with local parameter control only—no embedded microprocessor or data export capability. For traceable operation in regulated settings, external integration is supported via analog voltage outputs (0–10 V) for bath temperature and rotation speed signals, enabling connection to third-party data acquisition systems (e.g., LabVIEW, DeltaV, or custom SCADA platforms). When paired with compliant vacuum controllers (e.g., Vacuubrand VRD or KNF NP series) and calibrated PT100 probes, full audit trails—including time-stamped temperature, pressure, and rotation logs—can be generated in accordance with FDA 21 CFR Part 11 requirements using validated software solutions.

Applications

• Solvent removal from reaction mixtures post-synthesis (e.g., Grignard, Suzuki coupling workups)
• Concentration of natural extracts (e.g., plant alkaloids, essential oils) without thermal degradation
• Recovery and recycling of high-purity solvents in QC labs to reduce operational costs and environmental impact
• Preparative-scale dehydration of hygroscopic intermediates prior to crystallization
• Removal of residual solvents from API batches in accordance with ICH Q3C guidelines
• Parallel evaporation setup when coupled with multi-position manifolds and programmable vacuum controllers

FAQ

What is the maximum recommended flask size for the RE-3000A?
The system is mechanically rated for up to 5 L round-bottom flasks; however, optimal performance—especially for viscous or foaming samples—is achieved with 1–2 L vessels.
Can the RE-3000A be used under inert atmosphere (e.g., nitrogen or argon)?
Yes—by connecting a regulated inert gas line to the vacuum inlet port via a needle valve, the system supports gentle purging and positive-pressure maintenance during evaporation of air-sensitive compounds.
Is the heating bath fill level sensor included?
No—users must manually monitor water/glycol levels; low-level operation risks heater dry-out and thermal runaway. A separate level alarm module can be retrofitted.
What vacuum pump compatibility is recommended?
Diaphragm pumps with ultimate vacuum ≤5 mbar and chemical resistance to target solvents (e.g., Vacuubrand PC 101 NT or KNF N840.3) are strongly advised for long-term reliability and oil-free operation.
Does the RE-3000A meet CE or UL certification standards?
The unit complies with CE marking requirements under the Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU); UL listing is not available but may be pursued via third-party evaluation for North American deployment.