IKA EUROSTAR Digital Overhead Stirrer

Overview

The IKA EUROSTAR Digital Overhead Stirrer is a precision-engineered laboratory stirring system designed for reliable, repeatable mixing of low- to medium-viscosity liquids up to 20 L. Built upon IKA’s decades-long heritage in drive technology and motor control, this overhead stirrer employs a brushless DC motor coupled with microprocessor-based speed regulation—enabling true stepless speed adjustment without mechanical gear shifting. Its operation follows the fundamental principle of torque transmission via a rotating shaft and impeller, where rotational energy is transferred to the fluid to induce laminar or turbulent flow depending on viscosity, geometry, and Reynolds number. The unit operates continuously at 100% duty cycle, making it suitable for extended batch processing in QC labs, R&D environments, and pilot-scale synthesis workflows. The compact, low-noise housing (IP42-rated) ensures stable performance under standard laboratory ambient conditions (5–40 °C, ≤80 % RH), while integrated electronic safety features—including overload protection, stall detection, and soft-start functionality—prevent motor damage and ensure operator safety during routine use.

Key Features

• Microprocessor-controlled speed regulation with digital RPM display (50–2000 rpm, ±1 rpm resolution)
• Brushless DC motor delivering consistent 55 W output power and peak torque of 30 N·cm
• Patented hollow-shaft design (11 mm internal diameter) enabling passage of temperature probes or pH electrodes during stirring
• Universal chuck with 0.5–10 mm clamping range and quick-release mechanism for rapid impeller exchange
• Stirring arm constructed from stainless steel (Ø13 mm × 160 mm) for mechanical rigidity and corrosion resistance
• Integrated thermal and current monitoring circuits providing real-time overload protection and automatic shutdown
• Low-vibration, quiet operation (<55 dB(A)) due to precision-balanced rotor assembly and optimized gearless drive architecture
• Compact footprint (80 × 190 × 222 mm) and lightweight chassis (2.8 kg) facilitating flexible benchtop integration

Sample Compatibility & Compliance

The EUROSTAR Digital supports a broad range of liquid-phase applications involving aqueous solutions, organic solvents, polymer dispersions, colloidal suspensions, and emulsions—with validated performance up to 10,000 mPa·s (e.g., 1% CMC, 5% PVP, or 20% glycerol/water mixtures). Its mechanical design complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emission) standards. The device meets essential requirements of the EU Machinery Directive 2006/42/EC and carries CE marking. While not inherently GLP/GMP-certified as a standalone instrument, its stable speed control, traceable digital readout, and reproducible torque delivery support compliance with ASTM D2196 (viscosity measurement), ISO 3219 (rheological testing of polymers), and USP (dissolution apparatus verification protocols) when used within validated laboratory procedures. Optional accessories—including PT100-compatible temperature probes and calibrated impellers—are available to extend traceability and regulatory alignment.

Software & Data Management

The EUROSTAR Digital operates as a stand-alone instrument with no proprietary software dependency; all operational parameters are set and monitored directly via the front-panel keypad and LED display. However, it is fully compatible with IKA’s optional Labworldsoft® PC interface (via RS232 or USB-to-serial adapter), enabling remote speed control, real-time data logging (RPM, torque, time), and export of CSV-formatted datasets for audit-ready documentation. When integrated into regulated environments, Labworldsoft® supports user access levels, electronic signatures, and audit trail generation compliant with FDA 21 CFR Part 11 requirements—provided the host computer and network infrastructure meet applicable validation criteria. No firmware updates are required for routine operation, though IKA provides documented version history and release notes for all controller firmware revisions.

Applications

• Homogenization of buffer solutions and cell culture media in bioprocessing labs
• Mixing of reagent formulations prior to HPLC or GC analysis
• Preparation of calibration standards for spectrophotometric and electrochemical assays
• Dispersion of nanoparticles and pigment suspensions in materials science research
• Controlled agitation during crystallization studies and solvent-mediated phase transformations
• Batch-wise dilution and titration support in analytical chemistry workflows
• Stirring under inert atmosphere (with appropriate reactor lid sealing) for air-sensitive reactions

FAQ

What is the maximum recommended viscosity for continuous operation?
The EUROSTAR Digital is rated for continuous duty up to 10,000 mPa·s using standard anchor or paddle impellers at speeds ≥200 rpm. For viscosities >5,000 mPa·s, use low-shear impeller geometries and avoid abrupt speed changes.
Can the unit be mounted on third-party lab stands?
Yes—the R 1822 mounting bracket features standardized M10 threading and is compatible with most universal lab stands meeting ISO 8507 mechanical interface specifications.
Is the hollow shaft compatible with temperature sensors?
Yes—its 11 mm internal diameter accommodates standard 6 mm OD PT100 probes (e.g., IKA TS 100 series) without compromising seal integrity or mechanical stability.
Does the device support external analog/digital control signals?
No—the EUROSTAR Digital lacks analog input (0–10 V) or digital I/O ports; for programmable automation, Labworldsoft® integration is required.
What maintenance is required for long-term reliability?
No scheduled lubrication or calibration is needed. Wipe exterior surfaces with isopropanol; inspect chuck jaws and shaft threads quarterly for wear or debris accumulation.