IKA MICROSTAR 15 control Overhead Stirrer

Overview

The IKA MICROSTAR 15 control is a high-precision, microprocessor-controlled overhead stirrer engineered for reproducible mixing, dispersion, and homogenization in research laboratories, quality control environments, and pilot-scale development workflows. Designed around a brushless DC motor architecture, it eliminates carbon brush wear, ensuring long-term torque stability, low electromagnetic interference, and maintenance-free operation over extended duty cycles. Its core measurement principle relies on real-time digital monitoring of rotational speed, torque, temperature (via integrated PT1000 interface), and elapsed time—enabling closed-loop speed regulation even under dynamically changing viscosity conditions. The device operates across a wide speed range (0/30–1000 rpm) with ±1 rpm setting resolution and maintains speed constancy via active feedback control—critical when processing non-Newtonian fluids or temperature-sensitive formulations. With a maximum torque output of 15 N·cm and capability to handle viscosities up to 20,000 mPa·s in volumes up to 10 L (H₂O-equivalent), the MICROSTAR 15 control meets the mechanical and thermal demands of demanding chemical synthesis, polymer dissolution, suspension preparation, and pharmaceutical formulation protocols.

Key Features

• Brushless DC motor with 100% continuous duty rating and integrated thermal protection
• LCD display showing real-time speed, torque, temperature (if sensor connected), timer, and system status
• Hollow shaft design (8.5 mm internal diameter) allowing insertion of temperature probes, pH electrodes, or sampling needles without interrupting agitation
• Vibration detection circuitry that triggers automatic shutdown upon abnormal mechanical resonance—preventing sample splashing, vessel damage, or motor overload
• PT1000-compatible temperature input with Class A accuracy per DIN EN 60751, supporting process-critical thermal monitoring from −10 to +350 °C
• USB and Bluetooth interfaces enabling remote parameter logging, firmware updates, and integration into centralized lab data management systems
• labworldsoft® software compatibility for automated method storage, audit-trail generation, and GLP-compliant reporting
• Mechanical key lock function to prevent accidental parameter changes during unattended operation
• IP54-rated housing constructed from corrosion-resistant cast aluminum and chemically inert thermoplastic polymers
• Modular support arm (13 mm diameter, 160 mm length) compatible with standard IKA clamping systems and third-party lab frame assemblies

Sample Compatibility & Compliance

The MICROSTAR 15 control accommodates a broad spectrum of sample types—from low-viscosity aqueous buffers to highly viscous polymer melts and abrasive suspensions—thanks to its robust torque delivery and chemically resistant chuck assembly (clamping range: 0.5–8.2 mm). Its hollow shaft supports simultaneous multi-sensor insertion, facilitating concurrent measurement of temperature, pH, dissolved oxygen, or conductivity during stirring—a requirement in ASTM D2196 (viscosity of paints), ISO 2557-2 (plasticizer dispersion), and USP (uniformity of dosage units). The instrument complies with IEC 61010-1 for electrical safety, carries CE marking per EU Directive 2014/30/EU (EMC), and supports 21 CFR Part 11-ready data integrity when used with validated labworldsoft® configurations. Environmental operating specifications (5–40 °C ambient, ≤80% RH, IP54 ingress protection) ensure reliability in shared analytical labs and regulated manufacturing cleanrooms.

Software & Data Management

Through native USB and Bluetooth connectivity, the MICROSTAR 15 control integrates seamlessly with IKA’s labworldsoft® platform—a GxP-aligned software suite designed for method-driven instrument control. Users can define and store complete stirring protocols—including ramp profiles, hold times, torque limits, and temperature thresholds—with full electronic signatures and change history. All operational parameters (speed, torque, temperature, time) are timestamped and exportable in CSV or PDF formats compliant with ISO/IEC 17025 documentation requirements. Audit trails meet FDA 21 CFR Part 11 criteria when deployed with appropriate user access controls and electronic signature validation. Firmware updates are delivered securely via USB or over-the-air (OTA) through Bluetooth, ensuring long-term regulatory alignment without hardware intervention.

Applications

• Controlled-rate dissolution testing of solid dosage forms in pharmaceutical QC labs
• Emulsion and colloid stabilization studies requiring precise shear history documentation
• Catalyst slurry homogenization prior to reactor charging in fine chemical synthesis
• Thermosensitive hydrogel formation under constant temperature–agitation coupling
• High-solids-content battery slurry mixing for R&D electrode development
• Standardized viscosity benchmarking per ASTM D1200 (Ford Cup) and ISO 2555
• Long-duration stability trials (e.g., 6000-minute timer support) for shelf-life prediction

FAQ

Can the MICROSTAR 15 control be operated continuously for 24 hours?
Yes—it is rated for 100% continuous duty under specified ambient conditions (5–40 °C, ≤80% RH) and includes thermal cut-off protection.
Is the PT1000 temperature sensor included with the unit?
No—the PT1000 probe is an optional accessory; the instrument provides the interface and signal conditioning only.
Does the USB interface support direct connection to a networked lab PC without drivers?
Yes—plug-and-play USB 2.0 CDC class compliance enables immediate recognition on Windows, macOS, and Linux systems.
What is the purpose of the hollow shaft feature?
It allows insertion of external sensors (e.g., temperature, pH, conductivity) or sampling tools while maintaining uninterrupted agitation—eliminating manual intervention and improving process consistency.
How does the vibration detection system respond to unstable mounting?
Upon detecting mechanical resonance exceeding preset amplitude thresholds, the system halts rotation within <100 ms and displays a fault code, preventing equipment damage and sample loss.