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Qingdao Conqinphi Environmental Technology Group Co., Ltd., a professional manufacturer established in 2015 with a factory covering 10,000–30,000 square meters and annual export value exceeding US$10 million, presents the 20L Rotary Evaporator Distillation Apparatus with Digital Display and Vacuum Control. This high-precision equipment is designed to meet the most demanding solvent recovery and concentration needs in laboratories and pilot plants worldwide. With a robust build and intelligent control systems, it ensures efficient, safe, and repeatable distillation processes.
Our rotary evaporator features a large 20L rotary flask combined with a digital display for real-time monitoring of temperature, rotation speed, and vacuum level. The integrated vacuum controller allows precise adjustment of internal pressure, optimizing evaporation rates while preventing bumping or foaming. Whether you are working in pharmaceutical research, chemical engineering, or environmental analysis, this apparatus delivers consistent results with minimal operator intervention.
Built with high-quality borosilicate glass 3.3 and stainless steel components, the unit resists chemical corrosion and thermal shock. The motor is quiet and durable, ensuring smooth rotation even under heavy loads. Every component is engineered for long service life and easy maintenance, making it a cost-effective solution for continuous operation.
Key Features & Technical Specifications
- Digital Display: Large LED screen shows temperature (0.1°C resolution), rotation speed (1 rpm resolution), and vacuum level (mbar).
- Vacuum Control: Automatic adjustment via proportional valve; user can set target vacuum and ramping profile.
- 20L Batch Capacity: Ideal for pilot-scale production, reducing batch cycles without sacrificing quality.
- Temperature Control: PID microprocessor ensures stable heating with ±1°C accuracy.
- Safety Features: Over-temperature protection, motor overload cut-off, and emergency stop button.
- Corrosion Resistant: PTFE seals and glass-lined connections for aggressive solvents.
- Ease of Cleaning: Removable glass parts and stainless steel basin for quick maintenance.
- Compact Design: Occupies small footprint (650×450×1200mm) despite large capacity.
| Parameter | Value |
| Rotary Flask Capacity | 20L |
| Collecting Flask Capacity | 10L |
| Heating Bath Temperature Range | Room Temperature +5°C to 99°C |
| Rotary Speed | 0 – 180 rpm (digital display) |
| Vacuum Control Range | 0 – 1 atm (1 mbar resolution) |
| Motor Power | 250W (DC brushless) |
| Heating Power | 3kW (optional 5kW) |
| Power Supply | AC 220V/50Hz or 110V/60Hz (customizable) |
| Overall Dimensions (L×W×H) | 650×450×1200 mm |
| Net Weight | Approx. 55 kg |
Advantages & Customer Benefits
- High Throughput: 20L capacity reduces batch cycles, increasing daily production compared to smaller units.
- Precision Control: Digital display and vacuum controller allow operators to fine-tune parameters for different solvents, improving yield and purity.
- Reliability: Using premium materials and tested electronics, the equipment runs continuously with minimal downtime.
- Cost-Effective: Competitive price without compromising on quality; many customers report ROI in less than 6 months.
- Versatile: Suitable for evaporation, distillation, recrystallization, and solvent recovery in various industries.
- User-Friendly: Intuitive interface with one-touch start/stop and automatic shut-off when target volume is reached.
Our factory in Qingdao, Shandong, China, employs over 200 skilled workers and is equipped with modern CNC machining and glass blowing facilities. With an annual export value of US$10–50 million, we serve clients across North America, South America, Europe, Africa, and Oceania. We hold multiple certifications including ISO9001, ISO14000, OHSAS18001, and have passed third-party audits for safety and environmental management. Every unit undergoes rigorous testing before shipment, and we offer a 2-year warranty on parts and free technical support.
Why choose Conqinphi? We have been in the rotary evaporator market for nearly a decade, refining our design based on customer feedback. Our after-sales team provides multilingual support and maintains a spare parts inventory for quick dispatch. We can also customize the unit (e.g., explosion-proof motor, larger heating bath, or special glassware) according to your specific requirements. Contact us for a quotation or to arrange a factory tour.
Frequently Asked Questions
-
What is the maximum vacuum level this unit can achieve?
The system can achieve vacuum down to 1 mbar (absolute) when connected to a suitable vacuum pump (not included). The vacuum controller allows stable regulation. -
Can I use this rotary evaporator for high-boiling-point solvents like DMF?
Yes, the heating bath can reach up to 99°C. For DMF (boiling point 153°C), we recommend an optional high-temperature heating bath up to 180°C. -
Is the glassware replaceable? What is the thickness?
All glass parts are standard and easily replaceable. The borosilicate glass 3.3 has a wall thickness of 3.5–4mm for the flask and 2.5–3mm for the condenser. -
Do you provide installation and training?
Yes, we provide detailed manuals and video instructions. For large orders, on-site training can be arranged. Remote support is available via email or video call. -
What is the lead time for this model?
Standard 20L model is in stock; lead time is 3–7 days. Customized versions take 15–25 days. -
Can the unit be used with flammable solvents? Is it explosion-proof?
Standard unit is not ATEX certified, but we offer an explosion-proof motor and sealed electrical enclosure as optional upgrades for hazardous environments. -
How do I clean the residue inside the flask?
The flask can be easily removed and cleaned with appropriate solvents or detergents. A built-in drain valve in the bath simplifies water replacement.
For further inquiries or to place an order, please contact our sales team. We look forward to partnering with you!
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