WIGGENS WHMIX Series Electromagnetic Induction Multi-Position Magnetic Stirrer

Overview

The WIGGENS WHMIX Series Electromagnetic Induction Multi-Position Magnetic Stirrer is an engineered solution for high-throughput, precision-controlled mixing in regulated laboratory environments. Unlike conventional permanent-magnet or motor-driven stirrers, the WHMIX platform employs contactless electromagnetic induction drive technology—eliminating mechanical wear, carbon brush degradation, and magnetic coupling slippage. This architecture delivers stable torque transmission across the full speed range (100–2000 rpm), even at low rotational speeds where conventional systems exhibit instability or stalling. Designed for continuous operation under demanding chemical, thermal, and mechanical loads, the WHMIX series meets the structural integrity and material compatibility requirements of pharmaceutical development, bioprocess optimization, and analytical sample preparation workflows. Its flat, seamless ceramic-coated top plate ensures uniform heat distribution and resistance to aggressive solvents, acids, and bases—critical for long-term reliability in GLP-compliant synthesis and QC labs.

Key Features

• Contactless electromagnetic induction drive: No moving parts, zero maintenance, no wear on stir bar coupling or drive mechanism.
• Multi-position flexibility: Configurable platforms with 4 (WHMIX 4 MS), 6, 8, 12, or 15 independently controllable stirring positions—each with individual speed and power regulation.
• High-precision digital control: Bright LED display shows real-time speed (rpm) and relative power output; soft-start function ensures reliable capture and centering of magnetic stir bars without splashing or vortex misalignment.
• Intelligent memory retention: Automatically stores last-used speed and power settings for rapid reconfiguration between experiments.
• Robust stainless steel housing (AISI 304): Chemically inert, autoclavable-compatible surface finish; IP64-rated enclosure protects internal electronics from dust ingress and water splashes during routine cleaning.
• Thermally stable platform: Ceramic-coated aluminum top plate maintains consistent thermal conductivity across all positions—enabling parallel temperature-controlled reactions when used with compatible hotplates or environmental chambers.

Sample Compatibility & Compliance

The WHMIX series accommodates standard laboratory vessels including conical flasks (up to 2000 mL), tall-form beakers (600 mL and 250 mL), and reaction tubes—configured according to model-specific spacing (65–140 mm center-to-center). Each position supports stirring volumes from 1 mL to 3 L (H₂O-equivalent), with optimized torque delivery ensuring homogeneity in viscous media (e.g., polymer solutions, cell culture suspensions, and precipitating reagents). All models comply with IEC 61010-1:2010 for electrical safety in laboratory equipment and carry CE and RoHS certifications. The WHMIX 4 MS variant enables true independent control—allowing simultaneous execution of four distinct protocols (e.g., pH-dependent hydrolysis, enzymatic kinetics, redox titration, and buffer equilibration) on a single unit—supporting audit-ready documentation per FDA 21 CFR Part 11 when integrated with validated LIMS or ELN systems.

Software & Data Management

While the WHMIX series operates as a standalone instrument with intuitive front-panel controls, its digital interface supports integration into automated lab ecosystems via optional RS-232 or USB-to-serial adapters (sold separately). When connected to host software, users can log timestamped speed profiles, export operational history (start/stop time, duration, max speed), and generate CSV-formatted reports suitable for internal QA review or regulatory submissions. Firmware updates are delivered via secure WIGGENS-provided utilities, ensuring alignment with evolving IEC and ISO/IEC 17025 traceability requirements. Audit trail functionality—including user ID tagging and parameter change logging—is available through third-party laboratory automation platforms compliant with ALCOA+ principles.

Applications

• Parallel synthesis in medicinal chemistry: Simultaneous optimization of reaction conditions across multiple catalysts or substrates.
• Biopharmaceutical process development: Uniform mixing of monoclonal antibody formulations, excipient screening, and stability-indicating dilution series.
• Environmental testing: Homogenization of soil leachates, wastewater samples, and sediment suspensions prior to ICP-MS or HPLC analysis.
• Materials science: Dispersion of nanomaterials (e.g., graphene oxide, quantum dots) in solvent matrices under inert atmosphere gloveboxes.
• Educational laboratories: Scalable teaching platform for kinetics experiments, dissolution rate studies, and thermodynamic equilibrium demonstrations.

FAQ

Does the WHMIX series support external temperature control integration?
Yes—when paired with WIGGENS WHL series hotplate-stirrers or third-party Peltier-based platforms, the WHMIX maintains synchronized speed regulation while temperature ramps or holds are executed.
Can stir bars be centered reliably at low speeds (e.g., <200 rpm)?
Yes—the electromagnetic induction system provides constant torque down to 100 rpm, and the soft-start algorithm dynamically adjusts field strength to ensure precise stir bar capture and centripetal stabilization.
Is the stainless steel housing resistant to nitric acid or sodium hypochlorite exposure?
The AISI 304 stainless steel chassis exhibits excellent resistance to oxidizing agents up to 30% concentration at ambient temperatures; extended exposure requires validation per ASTM G31 immersion testing protocols.
What is the expected service life under continuous 24/7 operation?
Based on accelerated lifetime testing per IEC 60068-2-64, the electromagnetic driver module demonstrates >50,000 hours MTBF (mean time between failures) with no scheduled maintenance required.
Are calibration certificates available for metrological traceability?
Factory calibration reports (including speed accuracy ±2 rpm at 100–2000 rpm, verified against NIST-traceable tachometers) are provided with each unit; UKAS-accredited calibration services are available upon request.