Great Wall R-1001VN Benchtop Rotary Evaporator

Overview

The Great Wall R-1001VN Benchtop Rotary Evaporator is an engineered solution for small-scale purification, concentration, and solvent recovery in research laboratories, quality control environments, and pilot-process development. Operating on the principle of reduced-pressure thin-film evaporation, the system rotates a sample-containing flask under controlled thermal and vacuum conditions, maximizing surface area exposure to accelerate gentle, selective solvent removal. Its vertical dual-return condenser—combined with a precisely regulated heating bath and high-integrity sealing architecture—ensures efficient vapor capture and minimal carryover, critical for reproducible recovery of heat-sensitive compounds such as pharmaceutical intermediates, natural product extracts, and polymer precursors.

Key Features

• Vertical high-efficiency dual-return condenser (0.126 m² effective cooling area) optimized for rapid condensation across volatile solvents including acetone, ethanol, ethyl acetate, and dichloromethane
• PTFE-modified + fluoroelastomer dual-seal interface at all critical rotary joints, achieving ≤0.33 kPa/min system leakage rate under operational vacuum (validated per ISO 2787:2018 methodology)
• Digital PID temperature controller with ±0.5 °C stability over 20–95 °C range; integrated digital display for real-time bath temperature monitoring
• Stepless speed regulation from 20 to 180 rpm via precision DC motor (25 W), enabling fine-tuned film formation for viscous or low-surface-tension samples
• Modular bath-to-mainframe design allows flexible integration with external chillers, vacuum controllers, or inert gas manifolds without mechanical interference
• Counterbalanced manual lift mechanism (100 mm motorized slide + 150 mm manual override) ensures safe, repeatable positioning of 500 mL or 1000 mL rotating flasks
• Comprehensive electrical protection suite: short-circuit detection, overcurrent cutoff, and thermal cutout aligned with IEC 61010-1 safety requirements

Sample Compatibility & Compliance

The R-1001VN accommodates standard ground-glass jointed glassware (ISO K 29/32 and K 35/40), supporting common 1 L round-bottom flasks and 1 L receiving flasks. Its non-corrosive sealing materials resist degradation from halogenated, acidic, and polar aprotic solvents—making it suitable for applications compliant with USP , ICH Q3C, and ASTM D1296-22 solvent residue testing protocols. While not certified for GMP manufacturing use, its stable temperature/speed control, traceable calibration points, and audit-ready operational parameters support GLP-aligned documentation practices. The device meets CE marking requirements (EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU) and operates reliably within ambient conditions of 5–40 °C and ≤70% RH.

Software & Data Management

As a standalone benchtop instrument, the R-1001VN does not include embedded software or network connectivity. All operational parameters—including setpoint temperature, actual bath temperature, rotation speed, and runtime—are displayed locally via dual digital LED indicators. For laboratories requiring data traceability, external logging is supported via analog output interfaces (0–5 V or 4–20 mA optional upon request) compatible with third-party SCADA systems or validated LIMS platforms. When deployed in regulated environments, users may document settings, batch numbers, and vacuum levels manually in lab notebooks or electronic records compliant with FDA 21 CFR Part 11 (when paired with appropriate electronic signature controls).

Applications

• Solvent removal during natural product isolation (e.g., terpenoid extraction from botanical matrices)
• Concentration of dilute reaction mixtures prior to HPLC or NMR analysis
• Removal of low-boiling solvents in peptide synthesis and oligonucleotide deprotection workflows
• Recovery and reuse of expensive organic solvents in academic and industrial R&D labs
• Preparative distillation of thermally labile compounds where oil-bath overheating must be avoided
• Method development for scale-up to production-grade rotovaps (e.g., correlating 1 L bench data to 20 L pilot units)

FAQ

What vacuum level is recommended for optimal performance with the R-1001VN?
A stable vacuum between 10–50 mbar is typical for most organic solvents; lower pressures (<5 mbar) may be used for high-boiling-point solvents but require careful temperature modulation to prevent bumping.
Can the R-1001VN be used with corrosive solvents such as concentrated HCl or brominated compounds?
No—while the PTFE/fluoroelastomer seals offer broad chemical resistance, direct exposure to strong mineral acids, oxidizers, or bromine-based reagents exceeds material compatibility limits and voids warranty.
Is the heating bath interchangeable with other Great Wall models?
The R-1001VN uses a proprietary bath geometry and mounting interface; cross-model interchangeability is not supported.
Does the unit include vacuum or cooling accessories?
No—the R-1001VN is supplied as a core evaporator only; compatible vacuum pumps, chiller units, and cold traps are selected separately based on application-specific vapor load and condensation demands.
What maintenance intervals are recommended for long-term reliability?
Seal inspection every 6 months or after 500 operating hours; periodic verification of bath temperature accuracy using a calibrated NIST-traceable thermometer; motor lubrication is not required (brushless DC design).