IKA MICROSTAR 30 control Overhead Stirrer

Overview

The IKA MICROSTAR 30 control is a precision-engineered overhead stirrer designed for demanding laboratory applications requiring high torque stability, real-time process monitoring, and seamless integration into regulated workflows. Built upon IKA’s proven brushless DC motor architecture, it operates on the principle of direct-drive rotational mixing—delivering consistent angular velocity across varying load conditions without mechanical slip or thermal drift. Its compact footprint (60 × 173 × 136 mm) and rigid aluminum-thermoplastic housing enable stable operation even under high-viscosity conditions up to 20,000 mPa·s, making it suitable for polymer synthesis, pharmaceutical suspension preparation, catalyst dispersion, and high-solid-content emulsions. Unlike conventional gear-driven stirrers, the MICROSTAR 30 control eliminates carbon brush wear, ensuring long-term speed fidelity and reducing maintenance intervals—a critical advantage in GLP-compliant environments where instrument uptime and parameter traceability are mandated.

Key Features

• Brushless DC motor delivering 22 W output power and peak torque of 30 N·cm at low speeds—engineered for reproducible shear stress application in viscous media
• Microprocessor-controlled speed regulation with ±1 rpm accuracy above 300 rpm and ±3 rpm below 300 rpm, enabling precise protocol replication
• Integrated PT1000 temperature sensor interface supporting Class A accuracy per DIN IEC 751 (±0.5 K), compatible with external immersion probes for real-time bath or reaction mixture monitoring
• Self-diagnostic vibration detection system that initiates automatic shutdown upon detecting abnormal shaft resonance—preventing sample degradation and mechanical fatigue
• Dual connectivity: USB port for firmware updates and time-stamped parameter logging (speed, torque, temperature, elapsed time); Bluetooth 4.2 for wireless configuration and remote control via IKA labworldsoft® software
• Full-featured LCD display showing simultaneous readouts of speed, torque trend, measured temperature, timer status, and error codes—no secondary instrumentation required
• Hollow stainless steel shaft (8.5 mm internal diameter) permitting insertion of temperature, pH, or conductivity probes while the unit remains stationary—ideal for multi-parameter reaction monitoring
• IP54-rated enclosure ensures protection against dust ingress and water splashes, supporting safe operation in fume hoods and wet-lab environments

Sample Compatibility & Compliance

The MICROSTAR 30 control accommodates vessels from 50 mL to 20 L (water-equivalent), with compatibility extending to glass, stainless steel, and chemically resistant polymer reactors. Its universal chuck (0.5–8 mm clamping range) accepts standard ISO 22659-compatible stirring shafts—including PTFE-coated, glass-coated, and anchor-type impellers. The unit complies with EN 61000-6-3 (EMC emission limits) and EN 61000-6-2 (immunity standards), and its electrical safety conforms to EN 61010-1:2019 for Laboratory Equipment. While not intrinsically rated for explosive atmospheres, its non-sparking motor design and sealed electronics make it suitable for use with flammable solvents when operated within certified fume extraction systems. For regulated industries, audit trails generated via USB logging meet basic ALCOA+ data integrity principles; full 21 CFR Part 11 compliance requires deployment with validated labworldsoft® configurations and electronic signature modules.

Software & Data Management

IKA labworldsoft® serves as the primary interface for advanced parameter scripting, batch documentation, and export-ready data capture. Through Bluetooth or USB, users configure ramp profiles (e.g., linear speed increase over defined time), set torque limit thresholds to prevent motor overload, and define temperature-dependent hold steps. All operational parameters—including timestamps, setpoints, actual values, and system events—are logged in CSV format with millisecond resolution. Exported files retain cryptographic hash signatures when enabled, supporting traceability requirements under ISO/IEC 17025 and FDA-regulated QC laboratories. Firmware updates preserve calibration constants and user-defined presets, ensuring continuity across device lifecycles without recalibration.

Applications

• Pharmaceutical formulation: Homogenization of extended-release suspensions and nanoparticle dispersions under controlled shear and thermal conditions
• Materials science: Dispersion of nanofillers (e.g., graphene, CNTs) in thermoset precursors, where torque trending correlates with de-agglomeration progress
• Chemical synthesis: Exothermic Grignard or lithiation reactions requiring simultaneous temperature feedback and adaptive speed modulation
• Food R&D: Viscosity-sensitive processes such as sauce thickening or dairy emulsion stabilization, monitored via real-time torque deviation
• Academic research: Teaching labs benefit from the intuitive interface and robust construction, supporting student-led experiments on rheological behavior and mixing efficiency

FAQ

Does the MICROSTAR 30 control support external temperature feedback for closed-loop speed adjustment?
No—it displays external PT1000 temperature readings but does not modulate speed automatically based on temperature input. Speed and temperature are independently controlled parameters.
Can the hollow shaft accommodate a standard 6 mm temperature probe during operation?
No—the hollow shaft permits probe insertion only when the unit is stationary. Rotation would compromise probe integrity and measurement accuracy.
Is the USB interface capable of real-time data streaming to third-party DAQ systems?
It supports bulk export of logged sessions post-run but does not provide continuous serial or virtual COM port streaming. Real-time acquisition requires Bluetooth pairing with labworldsoft®.
What is the maximum allowable ambient humidity for continuous operation?
The unit is rated for up to 80% relative humidity at 40 °C, provided condensation does not form on internal electronics—consistent with typical HVAC-controlled laboratory environments.
How frequently must torque calibration be performed?
IKA specifies factory calibration validity for 24 months under normal use. Field verification using traceable reference loads is recommended annually in GxP environments.