IKA EUROSTAR 20 High-Speed Digital Overhead Stirrer

Overview

The IKA EUROSTAR 20 High-Speed Digital Overhead Stirrer is an engineered solution for precision-controlled mechanical mixing in research and quality control laboratories. Designed around a brushless DC motor architecture, it delivers consistent torque delivery and thermal stability across extended operation cycles—critical for reproducible dispersion, homogenization, and suspension protocols involving low- to medium-viscosity liquids (up to 10,000 mPa·s). Its core operational principle relies on closed-loop microprocessor-based speed regulation: the system continuously compares actual shaft rotation (measured via integrated optical or back-EMF sensing) against user-defined setpoints and dynamically adjusts power delivery to maintain nominal speed—even during viscosity fluctuations induced by temperature drift, solute dissolution, or phase transitions. This real-time feedback mechanism ensures compliance with GLP-aligned experimental repeatability requirements, particularly in applications governed by ASTM D1200 (viscosity measurement), ISO 749 (liquid mixing performance), or USP (uniformity of dosage units).

Key Features

• Brushless DC motor with 125 W continuous output power and 20 N·cm maximum torque—eliminates carbon wear, reduces maintenance intervals, and enhances long-term rotational stability
• Digital LED speed display with 0/150–6000 rpm range and ±1 rpm resolution above 300 rpm; calibrated per ISO 17025 traceable procedures
• Hollow-shaft design enables secure insertion of specialized impellers (e.g., anchor, turbine, or disperser blades) without disassembly—optimized for rapid tool changeovers in multi-step protocols
• Integrated electronic safety circuitry: automatic shutdown upon motor stall, thermal overload, or excessive current draw—fully compliant with IEC 61010-1 Edition 3 Annex BB for hazardous energy limitation
• IP40-rated enclosure (DIN EN 60529) featuring cast aluminum housing with thermoplastic polymer coating—resistant to common lab solvents and compatible with routine wipe-down decontamination
• Acoustically optimized geartrain and vibration-damped mounting base—operates at ≤55 dB(A) at 1 m distance under full-load conditions
• Error-code diagnostics (e.g., E01 = overload, E02 = sensor fault) displayed via segmented LED—facilitates rapid root-cause analysis during validation or troubleshooting

Sample Compatibility & Compliance

The EUROSTAR 20 supports mixing volumes up to 20 L of aqueous systems (H₂O reference), with validated performance across Newtonian and mildly shear-thinning fluids (e.g., polymer solutions, colloidal suspensions, buffer formulations). It accommodates standard DIN 28121-compliant stirring rods (Ø6–10 mm) and accepts IKA’s proprietary QuickLock impeller systems via its hollow shaft interface. The unit is CE-marked and conforms to essential health and safety requirements under the EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. While not intrinsically explosion-proof (ATEX/IECEx non-certified), its design meets ISO 14644-1 Class 8 cleanroom compatibility thresholds when used with appropriate peripheral filtration and static-dissipative accessories.

Software & Data Management

This standalone instrument operates without embedded firmware-based data logging or external connectivity (no RS232, USB, or analog output interfaces). All operational parameters—including speed setpoint, runtime, and active error states—are locally visible via the front-panel LED display. For regulated environments requiring audit trails, integration with third-party Lab Information Management Systems (LIMS) or electronic lab notebooks (ELN) must be achieved through manual entry or optional IKA Labworldsoft-compatible controllers (sold separately). The device supports 21 CFR Part 11 readiness only when paired with validated external control hardware fulfilling electronic signature and audit-log retention criteria.

Applications

• Routine preparation of culture media, reagent stocks, and calibration standards in microbiology and clinical chemistry labs
• Dispersion of nanoparticles and pigment concentrates in R&D-scale formulation development
• Emulsification trials for pharmaceutical suspensions and topical ointment bases under controlled shear history
• Accelerated stability testing of liquid dosage forms per ICH Q1A(R3), where consistent agitation intensity directly impacts degradation kinetics
• Blending of viscous polymer melts in material science workflows—within specified 10,000 mPa·s upper limit
• Continuous mixing in jacketed reactor vessels during exothermic synthesis steps requiring precise RPM modulation

FAQ

Does the EUROSTAR 20 support programmable ramping or timer functions?
No—this model lacks built-in timing or acceleration/deceleration profiles. Speed adjustment is manual and continuous via the rotary encoder.
Is the hollow shaft compatible with non-IKA impellers?
Yes, provided the impeller stem diameter and taper angle comply with DIN 28121 Type B specifications (1:10 taper, Ø6–10 mm). Adapters may be required for proprietary geometries.
Can it operate continuously at 6000 rpm for 24 hours?
Yes—rated for 100% duty cycle at all speeds within ambient conditions of 5–40 °C and ≤80% RH, subject to adequate ventilation and load-dependent torque limits.
What is the recalibration interval recommended by IKA?
Annual verification against a NIST-traceable tachometer is advised; full metrological recalibration requires return to an IKA-certified service center.
Does it meet FDA requirements for use in GMP manufacturing environments?
As a Class I standalone device, it may be deployed in GMP settings if included in a validated process, accompanied by documented IQ/OQ protocols, and operated within its specified environmental and load parameters.