Great Wall R-1020EX Rotary Evaporator

Overview

The Great Wall R-1020EX Rotary Evaporator is an industrial-grade benchtop-to-floor-standing purification system engineered for high-efficiency solvent removal, concentration, and gentle compound recovery under reduced pressure. It operates on the principle of rotary evaporation—where a rotating evaporating flask increases surface area and promotes uniform thin-film formation, while simultaneous heating (via a thermostatically controlled water or oil bath) and vacuum application lower the boiling point of solvents. This configuration enables rapid, reproducible, and thermally sensitive sample processing without decomposition. Designed for continuous laboratory-scale operation in synthetic chemistry, natural product isolation, pharmaceutical QC, and materials science workflows, the R-1020EX integrates robust mechanical architecture with precision thermal and rotational control—meeting functional requirements aligned with ISO/IEC 17025-compliant laboratories and GLP-aligned documentation practices.

Key Features

• 20 L high-capacity evaporating flask with Φ125 mm standard taper flange—optimized for large-volume batch processing and scalable downstream integration.
• Dual-stage vertical condensation system comprising a main condenser (0.948 m²) and auxiliary condenser (0.458 m²), featuring triple-reflux cold finger geometry to maximize condensate capture efficiency and minimize vapor bypass—even during high-throughput ethanol or low-boiling solvent evaporation.
• Wide temperature control range (ambient +5°C to 95°C) with ±1.5°C accuracy, enabled by a 6000 W SUS304 immersion heater and PID-based digital regulation—ensuring stable thermal profiles across extended runs.
• Variable-speed rotation via frequency-controlled motor (20–130 rpm), delivering consistent film thickness and minimizing bumping or foaming in viscous or foaming-prone solutions.
• PTFE/FKM dual-seal vacuum interface and PTFE discharge valve—providing chemical resistance against aggressive solvents (e.g., chlorinated hydrocarbons, strong acids/bases) and maintaining long-term vacuum integrity down to 100 Pa when paired with compatible vacuum sources.
• Manual lift mechanism with 190 mm vertical travel—enabling safe, repeatable flask immersion and removal without realignment; explosion-proof control cabinet (58 kg) certified for Class I, Division 1 hazardous environments per IEC 60079 standards.

Sample Compatibility & Compliance

The R-1020EX accommodates a broad spectrum of organic, aqueous, and mixed-solvent systems—including acetone, dichloromethane, ethyl acetate, methanol, ethanol, and toluene—as well as moderately viscous extracts (e.g., crude plant oils, polymer solutions). Its SUS304 bath and PTFE/FKM wetted materials ensure compatibility with USP Class VI–rated applications and support cleaning validation per ASTM E3106. While not intrinsically certified for FDA 21 CFR Part 11 compliance, its analog/digital instrumentation supports audit-trail-ready data logging when integrated with validated third-party SCADA or LIMS platforms. The system meets CE marking requirements for machinery safety (2006/42/EC) and electromagnetic compatibility (2014/30/EU).

Software & Data Management

The R-1020EX employs embedded digital controllers with LED-display interfaces for independent monitoring of bath temperature, rotation speed, and vacuum status. Though natively standalone, its 4–20 mA and RS485 outputs enable connection to programmable logic controllers (PLCs) or centralized lab automation systems. Users may configure setpoint ramps, dwell times, and safety interlocks—supporting SOP-driven operation in GMP environments. Optional analog chart recorders or USB-enabled data loggers (sold separately) facilitate traceable parameter archiving compliant with ISO 17025 clause 7.5.2 on equipment records.

Applications

• Solvent recovery and concentration of reaction mixtures in fine chemical synthesis.
• Removal of volatile extraction solvents (e.g., hexane, ether) from botanical or marine-derived samples.
• Gentle drying of heat-labile APIs and intermediates prior to lyophilization or crystallization.
• Preparative-scale fractionation in natural product labs where batch consistency and residue minimization are critical.
• QC testing of residual solvents in pharmaceutical excipients per ICH Q3C guidelines.
• Educational demonstration of colligative properties, vapor pressure depression, and mass transfer kinetics in university teaching labs.

FAQ

What vacuum level can the R-1020EX achieve in practice?
When coupled with a suitable two-stage oil-sealed vacuum pump or dry scroll pump, the system maintains stable operation at ≤100 Pa—sufficient for low-boiling-point solvent removal (e.g., diethyl ether, pentane) and sensitive compound isolation.
Is the bath temperature calibration traceable to national standards?
The unit includes factory calibration documentation; end users may perform field verification using NIST-traceable PT100 probes per ASTM E74 or ISO/IEC 17025 Section 6.6.
Can the R-1020EX be integrated into a fully automated purification line?
Yes—its analog I/O and Modbus RTU capability allow synchronization with feed pumps, fraction collectors, and vacuum controllers in multi-step purification sequences.
Does the explosion-proof control box meet ATEX directives?
The cabinet complies with IEC 60079-0 and IEC 60079-1 for non-mining explosive atmospheres; ATEX certification requires additional regional conformity assessment and is available upon request with EU Representative designation.
What maintenance intervals are recommended for sustained vacuum performance?
We recommend inspecting seals and condenser cleanliness after every 200 operational hours; vacuum pump oil replacement every 500 hours or per pump manufacturer guidance.