

The AELAB Overhead Stirrer Series (OS-T40-Plus / OS-T60-Plus / OS-T400-Plus) delivers powerful torque, intelligent speed control, and advanced safety features for reliable laboratory mixing. Designed for demanding research, QC, and industrial applications, these overhead stirrers ensure stable performance even with high-viscosity samples.
The overhead stirrer operates by transferring torque from a brushless DC motor to the stirring paddle, enabling controlled rotation in various container types. Using an intelligent speed-regulation system, the device automatically adjusts motor output according to viscosity changes, ensuring constant speed and stable mixing. The integrated temperature sensor monitors sample temperature in real time to support precise experimental conditions.
The AELAB OS-Plus series is constructed with a high-efficiency brushless DC motor that minimizes noise and provides long service life. Each model integrates an LCD display for real-time speed, torque, timing, and temperature indication. A secure paddle “through-the-top” design ensures safe and quick container replacement, while overload protection safeguards the motor and drive system. The instrument features forward/reverse rotation (OS-T40-Plus and OS-T60-Plus) and wide chuck compatibility from 0.5–10mm.
The system stabilizes stirring speed by continuously measuring torque and adjusting power output to compensate for changes in viscosity. Users may program timing (0min–99h59min), select rotation mode (forward, reverse, intermittent where applicable), and monitor temperature using the external probe (0–100°C). This closed-loop control mechanism enables high reproducibility in complex mixing workflows.
All models include RS485, USB, and Type-C data interfaces, allowing seamless integration with laboratory information systems, PC-based monitoring software, and automated data export. These connectivity options support GLP documentation and digital traceability requirements.
| Model | Specifications |
|---|---|
| OS-T40-Plus | 30L capacity, 50–2200rpm, 40N·cm torque, 10000mPa·s viscosity, LCD, brushless DC motor |
| OS-T60-Plus | 50L capacity, 50–2200rpm, 60N·cm torque, 50000mPa·s viscosity, LCD, brushless DC motor |
| OS-T400-Plus | 100L capacity, dual-gear 10–400rpm / 50–2000rpm, 400N·cm torque, 100000mPa·s viscosity |
AELAB overhead stirrers adhere to international laboratory safety and performance standards. All models undergo rigorous calibration for torque, speed, and temperature accuracy, ensuring traceable, GLP-compliant performance in scientific and industrial environments.
Specifications :
| Specifications | OS-T40-Plus | OS-T60-Plus | OS-T400-Plus |
|---|---|---|---|
| Max. stirring quantity (H₂O) | 30L | 50L | 100L |
| Speed range | 50–2200rpm | 50–2200rpm | A gear: 10–400rpm; B gear: 50–2000rpm |
| Time settings range | 0min–99h59min | 0min–99h59min | 0min–99h59min |
| Max. torque | 40N·cm | 60N·cm | 400N·cm |
| Viscosity max. | 10000mPa·s | 50000mPa·s | 150000mPa·s |
| Motor type | Brushless DC motor | Brushless DC motor | Brushless DC motor |
| Speed display | LCD | LCD | LCD |
| Torque display | LCD | LCD | LCD |
| Forward and reverse rotation | Forward, reverse, intermittent mixing | Forward, reverse, intermittent mixing | - |
| Temperature display accuracy | 0.1°C | 0.1°C | 0.1°C |
| External temperature sensor | 0–100°C | 0–100°C | 0–100°C |
| Overload protection display | LCD | LCD | LCD |
| Chuck clamp range diameter | 0.5–10mm | 0.5–10mm | 0.5–10mm |
| Data interface | RS485, Type-C, USB | RS485, Type-C, USB | RS485, Type-C, USB |
| Voltage, Frequency | 100–240V, 50/60Hz | 100–240V, 50/60Hz | 100–240V, 50/60Hz |
| Motor input/output power | 60W / 50W | 120W / 100W | 180W / 170W |
| Power | 70W | 130W | 300W |
| Dimension (W×H×D) | 90×240×227mm | 90×240×227mm | 101×270×264mm |
| Weight | 3.5kg | 3.5kg | 5.2kg |
| Permissible ambient temperature and humidity | 5–40°C, 80%RH | 5–40°C, 80%RH | 5–40°C, 80%RH |
| Specifications | OS-T40-Plus | OS-T60-Plus | OS-T400-Plus |
|---|---|---|---|
| Max. stirring quantity (H₂O) | 30L | 50L | 100L |
| Speed range | 50–2200rpm | 50–2200rpm | A gear: 10–400rpm; B gear: 50–2000rpm |
| Time settings range | 0min–99h59min | 0min–99h59min | 0min–99h59min |
| Max. torque | 40N·cm | 60N·cm | 400N·cm |
| Viscosity max. | 10000mPa·s | 50000mPa·s | 150000mPa·s |
| Motor type | Brushless DC motor | Brushless DC motor | Brushless DC motor |
| Speed display | LCD | LCD | LCD |
| Torque display | LCD | LCD | LCD |
| Forward and reverse rotation | Forward, reverse, intermittent mixing | Forward, reverse, intermittent mixing | - |
| Temperature display accuracy | 0.1°C | 0.1°C | 0.1°C |
| External temperature sensor | 0–100°C | 0–100°C | 0–100°C |
| Overload protection display | LCD | LCD | LCD |
| Chuck clamp range diameter | 0.5–10mm | 0.5–10mm | 0.5–10mm |
| Data interface | RS485, Type-C, USB | RS485, Type-C, USB | RS485, Type-C, USB |
| Voltage, Frequency | 100–240V, 50/60Hz | 100–240V, 50/60Hz | 100–240V, 50/60Hz |
| Motor input/output power | 60W / 50W | 120W / 100W | 180W / 170W |
| Power | 70W | 130W | 300W |
| Dimension (W×H×D) | 90×240×227mm | 90×240×227mm | 101×270×264mm |
| Weight | 3.5kg | 3.5kg | 5.2kg |
| Permissible ambient temperature and humidity | 5–40°C, 80%RH | 5–40°C, 80%RH | 5–40°C, 80%RH |
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