Shanghai Yarong RE-5298A Rotary Evaporator
| Brand | Jinye |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | RE-5298A |
| Capacity | 3 L |
| Rotation Speed | Electronically Controlled, 0–150 rpm with Digital RPM Display |
| Temperature Control Range | Ambient to 99 °C |
| Temperature Accuracy | ±1 °C |
| Condenser Type | Dual-Return Vertical Standard-Joint Condenser |
| Condensing Area | 0.15 m² |
Overview
The Shanghai Yarong RE-5298A Rotary Evaporator is a benchtop vacuum distillation system engineered for efficient solvent removal, concentration, and purification under reduced pressure. It operates on the principle of rotary evaporation—where a rotating flask increases the evaporative surface area while controlled heating and vacuum lower the boiling point of solvents. Designed for stability and reproducibility in routine laboratory workflows, the RE-5298A integrates a vertical condenser assembly with dual-return coolant flow path, enabling high-efficiency vapor condensation across a wide range of volatile and semi-volatile organic solvents—including ethanol, acetone, dichloromethane, ethyl acetate, and water-based mixtures. Its all-in-one upright configuration minimizes footprint and improves ergonomic access during operation and cleaning.
Key Features
- Integrated digital display panel showing real-time rotation speed (0–150 rpm) and bath temperature (ambient to 99 °C), with ±1 °C thermal regulation accuracy.
- 3-liter evaporation flask capacity compatible with standard ISO 2977 ground-glass joints (typically 29/32 or 35/40), supporting scalable batch processing in research and pilot-scale applications.
- Vertically mounted dual-return condenser featuring a 0.15 m² effective cooling surface area; optimized for laminar coolant flow and maximum heat transfer efficiency under continuous operation.
- Brushless DC motor drive ensures smooth, low-vibration rotation across the full speed range, reducing mechanical stress on samples and glassware.
- Heating bath constructed from stainless steel with silicone oil compatibility; temperature control via PID algorithm for stable thermal output without overshoot.
- Sealed vacuum interface with standard KF-16 or ISO-KF porting, compatible with common lab-grade diaphragm or rotary vane vacuum pumps (recommended ultimate vacuum ≤10 mbar).
Sample Compatibility & Compliance
The RE-5298A accommodates a broad spectrum of sample matrices including aqueous extracts, organic reaction mixtures, polymer solutions, natural product isolates, and pharmaceutical intermediates. Its design conforms to general safety requirements outlined in IEC 61010-1 for electrical equipment used in laboratory environments. While not certified to specific GMP or FDA 21 CFR Part 11 standards out-of-the-box, the instrument supports GLP-compliant documentation when integrated into validated SOPs—particularly where temperature and rotation parameters are manually recorded or logged via external data acquisition systems. All wetted parts are borosilicate glass (Duran®-grade equivalent) and PTFE-sealed, ensuring chemical resistance to common solvents and minimizing contamination risk.
Software & Data Management
The RE-5298A is a stand-alone analog-digital hybrid instrument with no embedded microprocessor or network connectivity. Parameter monitoring is performed locally via front-panel LED displays; no proprietary software, drivers, or cloud integration are provided. Users may pair the unit with third-party data loggers (e.g., Omega OM-DAQPRO or LabVIEW-compatible USB thermocouple interfaces) to capture time-stamped temperature and rotational data for audit trails. For regulated environments requiring electronic records, manual entry into ELN platforms (e.g., Benchling, LabArchives) or paper-based logbooks remains the standard practice.
Applications
- Solvent recovery and concentration of heat-sensitive compounds in biopharmaceutical downstream processing.
- Purification of synthetic intermediates in fine chemical manufacturing, especially where low-residue distillation is required.
- Removal of reaction solvents prior to crystallization or lyophilization steps in API development.
- Extraction and enrichment of phytochemicals from botanical matrices using ethanol or methanol-based protocols.
- Preparative-scale dehydration of hygroscopic materials where precise thermal input must be balanced against decomposition thresholds.
FAQ
What is the maximum recommended vacuum level for optimal performance?
For most applications, an operating vacuum between 10–50 mbar delivers optimal balance between evaporation rate and condensation efficiency. Lower pressures (<5 mbar) may cause bumping or foaming in viscous or foaming-prone solutions.
Is the heating bath compatible with silicone oil and water baths?
Yes—the stainless steel bath accepts both water (up to 99 °C) and silicone oil (up to 150 °C, though controller limit remains 99 °C unless externally modified). Oil use requires verification of seal compatibility and thermal stability of attached glassware.
Can the RE-5298A be used with fractional distillation kits?
It is not configured for fractional distillation by default; however, users may integrate optional Vigreux or spinning-band columns between the evaporation flask and condenser using appropriate ground-glass adapters.
What maintenance intervals are recommended for long-term reliability?
Daily wipe-down of glass components and periodic inspection of PTFE seals and motor coupling are advised. Vacuum grease on ground joints should be refreshed every 2–3 months depending on usage frequency and solvent type.
Does the unit include a vacuum controller or pressure sensor?
No—the RE-5298A does not feature built-in vacuum regulation or pressure feedback. External vacuum controllers (e.g., Vacuubrand VACUU·SELECT) must be added for automated pressure ramping or endpoint detection.
