AELAB OS20-S / OS40-S LED Overhead Stirrer for High-Precision Mixing

The AELAB OS-Series LED Overhead Stirrers are engineered for efficient, quiet, and durable mixing performance across a wide range of laboratory environments. Featuring brushless DC motors, broad speed adjustability, and high torque output, they deliver outstanding performance for both low and high-viscosity solutions.

The AELAB OS20-S / OS40-S LED Overhead Stirrer delivers reliable, high-torque operation for demanding laboratory mixing tasks. Designed with a brushless DC motor, wide speed range, LED display, and multiple safety protections, it ensures precise and stable stirring across a variety of viscosities and sample volumes.

⚙️ Design & Construction

The AELAB OS20-S and OS40-S incorporate a maintenance-free Brushless DC motor for prolonged lifetime, explosion-proof operation, and stable torque output. The LED display provides real-time monitoring of actual stirring speed. A robust chuck accommodates shafts from 0.5–10 mm, while overload protection circuitry ensures safe stopping during anti-stall or overload events. The compact 83 × 220 × 186 mm frame is suited for benchtop installation with IP21 protection.

🔬 Working Principle / Testing Method

The overhead stirrer transmits rotational mechanical force from the brushless DC motor to the stirring shaft, enabling controlled agitation of liquids across viscosities up to 50000 mPa·s (OS40-S). The LED screen displays the instantaneous rpm value, while internal feedback mechanisms regulate torque under varying load conditions. This ensures uniform mixing in applications ranging from aqueous solutions to dense suspensions.

💡 Key Advantages

• Stable rpm regulation across the full 50–2200 rpm range
• High-torque output for viscous materials such as gels, polymers, and resins
• Long-life brushless DC motor requiring zero routine maintenance
• Wide chuck range compatible with diverse impellers and paddles
• LED speed feedback for precise process control
• Safe operation through integrated overload and anti-stall protection
• Compact footprint suitable for fume hoods and benchtop environments

🔗 Connectivity & Integration

The OS-Series supports standard laboratory integration with optional plate stands, shaft accessories, and AELAB mixing tools including propeller, paddle, centrifugal, and radial-flow stirrers. Mechanical components are compatible with the universal 0.5–10 mm chuck for flexible system configuration.

🧠 Model Insight

🧪 Testing Applications

• Chemical solution preparation
• Polymer and resin mixing
• Food science research
• Cosmetic formulation
• Pharmaceutical suspensions
• General laboratory stirring applications

Compliance & Quality Assurance

The AELAB OS-Series conforms to ISO laboratory equipment standards, incorporates GLP-compatible speed monitoring, and is manufactured under rigorous AELAB quality control protocols ensuring consistent performance and long-term reliability.