The AELAB OS-Pro Series LCD Digital Overhead Stirrers provide high-precision stirring performance for laboratories requiring accuracy, power, and operational stability. Built with brushless DC motors, torque display, and LCD speed monitoring, the OS20-Pro, OS40-Pro, and OS70-Pro support a broad range of viscosities up to 100000 mPa·s, ensuring dependable performance in research and industrial quality control environments.
These overhead stirrers maintain constant speed under changing load conditions, offering smooth start/stop control, overload protection, and long service life. They are suitable for continuous operation in chemical synthesis, pharmaceutical formulation, and material testing workflows.
The AELAB OS-Pro Series integrates a high-torque Brushless DC Motor for stable and maintenance-free operation. The LCD interface displays speed, torque, and system protection alerts for clear process oversight. A precision chuck accommodates shafts from 0.5–10 mm, while the IP21-rated housing supports safe daily laboratory use. The system includes a sealed silicone-covered drill chuck and optimized paddle design for efficient mixing at varying viscosities.
The instrument regulates stirring speed through an internal microprocessor that compensates for load fluctuations during mixing. The operator sets the required rpm, and the system stabilizes rotation even as viscosity changes. Real-time torque feedback, LCD indication, and overload protection circuits ensure accurate and controlled processing of liquid, semi-solid, and high-viscosity materials.
The RS232 interface allows data communication and external logging under GLP environments. The system supports PC connectivity for monitoring speed, torque, and runtime where required.
| Model | Specifications |
|---|---|
| OS20-Pro | 20 L capacity, 50–2200 rpm, 40 N·cm torque, 10000 mPa·s viscosity |
| OS40-Pro | 40 L capacity, 50–2200 rpm, 60 N·cm torque, 50000 mPa·s viscosity |
| OS70-Pro | 70 L capacity, 50–1100 rpm, 300 N·cm torque, 100000 mPa·s viscosity |
The AELAB OS-Pro Series is used in chemical synthesis, pharmaceutical formulation, petrochemical analysis, material property testing, food and beverage laboratories, cosmetic emulsion preparation, and general research applications involving liquids and high-viscosity materials.
All AELAB OS-Pro Series overhead stirrers comply with ISO and CE requirements, feature overload and overheat protection, and undergo rigorous AELAB quality control testing to ensure consistent laboratory performance.
Specifications :
| Specifications | OS20-Pro | OS40-Pro | OS70-Pro |
|---|---|---|---|
| Max. stirring quantity[H₂O] | 20 L | 40 L | 70 L |
| Speed range | 50–2200 rpm | 50–2200 rpm | 50–1100 rpm |
| Speed display accuracy | ±3 rpm | ±3 rpm | ±10 rpm |
| Time setting range | - | - | 0–99 h 59 min |
| Max. torque | 40 N·cm | 60 N·cm | 300 N·cm |
| Viscosity max. | 10000 mPa·s | 50000 mPa·s | 100000 mPa·s |
| Weight | 2.8 kg | 2.8 kg | 3.2 kg |
| Motor type | Brushless DC motor | Brushless DC motor | Brushless DC motor |
| Voltage/Frequency | 100–240V, 50/60 Hz | 100–240V, 50/60 Hz | 100–240V, 50/60 Hz |
| Speed display | LCD | LCD | LCD |
| Torque display | LCD | LCD | LCD |
| Overload protection display | LCD | LCD | LCD |
| Chuck clamp range diameter | 0.5~10 mm | 0.5~10 mm | 0.5~10 mm |
| Motor input/output power | 60W/50W | 120W/100W | 180W/160W |
| Power | 70W | 130W | 200W |
| Dimension(W×H×D) | 83 × 220 × 186 mm | 83 × 220 × 186 mm | 83 × 220 × 186 mm |
| Protection class | IP21 | IP21 | IP21 |
| Permissible ambient temperature and humidity | 5–40°C, 80%RH | 5–40°C, 80%RH | 5–40°C, 80%RH |
| Data interface | RS232 | RS232 | RS232 |
| Specifications | OS20-Pro | OS40-Pro | OS70-Pro |
|---|---|---|---|
| Max. stirring quantity[H₂O] | 20 L | 40 L | 70 L |
| Speed range | 50–2200 rpm | 50–2200 rpm | 50–1100 rpm |
| Speed display accuracy | ±3 rpm | ±3 rpm | ±10 rpm |
| Time setting range | - | - | 0–99 h 59 min |
| Max. torque | 40 N·cm | 60 N·cm | 300 N·cm |
| Viscosity max. | 10000 mPa·s | 50000 mPa·s | 100000 mPa·s |
| Weight | 2.8 kg | 2.8 kg | 3.2 kg |
| Motor type | Brushless DC motor | Brushless DC motor | Brushless DC motor |
| Voltage/Frequency | 100–240V, 50/60 Hz | 100–240V, 50/60 Hz | 100–240V, 50/60 Hz |
| Speed display | LCD | LCD | LCD |
| Torque display | LCD | LCD | LCD |
| Overload protection display | LCD | LCD | LCD |
| Chuck clamp range diameter | 0.5~10 mm | 0.5~10 mm | 0.5~10 mm |
| Motor input/output power | 60W/50W | 120W/100W | 180W/160W |
| Power | 70W | 130W | 200W |
| Dimension(W×H×D) | 83 × 220 × 186 mm | 83 × 220 × 186 mm | 83 × 220 × 186 mm |
| Protection class | IP21 | IP21 | IP21 |
| Permissible ambient temperature and humidity | 5–40°C, 80%RH | 5–40°C, 80%RH | 5–40°C, 80%RH |
| Data interface | RS232 | RS232 | RS232 |
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