WIGGENS WB2000-B1 High-Torque Overhead Stirrer

Overview

The WIGGENS WB2000-B1 is a high-torque, microprocessor-controlled overhead stirrer engineered for demanding laboratory mixing applications involving large-volume and highly viscous samples. Designed in accordance with DIN EN ISO 9001-compliant manufacturing practices in Germany, this instrument employs Couette-type shear principles—where rotational motion of the impeller induces controlled laminar or transitional flow within the fluid phase—to ensure consistent energy transfer and reproducible homogenization. Its brushless DC motor eliminates carbon brush wear, enabling stable operation under continuous high-load conditions typical of polymer solution blending, suspension preparation, or viscous catalyst slurries. The unit delivers up to 95 N·cm of torque at low speeds while maintaining precise speed regulation across its full 40–2000 rpm range, making it suitable for both gentle suspension maintenance and vigorous dispersion tasks in R&D, QC, and pilot-scale synthesis environments.

Key Features

• Brushless DC motor architecture ensures zero maintenance, extended service life, and thermal stability during prolonged operation.
• Microprocessor-based closed-loop speed control guarantees ±1 rpm accuracy, independent of load fluctuations or voltage drift.
• High-torque output (≤95 N·cm) enables reliable agitation of media up to 50,000 cP viscosity—compatible with silicone oils, hydrogels, pastes, and filled suspensions.
• LED digital display with rotary digital knob provides intuitive, tactile speed adjustment and real-time parameter feedback.
• Compact footprint (98 × 230 × 265 mm) and integrated universal clamp (max. shaft diameter 10 mm) support flexible integration into fume hoods, glove boxes, or reactor stations.
• Robust aluminum-magnesium alloy housing offers ESD-safe operation and resistance to common lab solvents and cleaning agents.

Sample Compatibility & Compliance

The WB2000-B1 accommodates a wide range of sample containers—from standard glass beakers (500 mL–20 L) to jacketed reactors and stainless-steel vessels—when paired with compatible anchor, paddle, or helical impellers (sold separately). It meets IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) standards, and its electrical safety design conforms to IEC 61010-1 for laboratory equipment. While not intrinsically rated for hazardous area use, the unit operates safely in Class 1000 cleanrooms and complies with GLP documentation requirements when used with validated impeller geometries and SOP-defined speed profiles. No ATEX or UL/cUL certification is provided; users requiring explosion-proof operation must implement external containment solutions.

Software & Data Management

The WB2000-B1 operates as a standalone analog-digital hybrid controller without embedded firmware update capability or PC connectivity. All operational parameters—including setpoint speed, actual RPM, and runtime—are displayed locally via the LED interface. For traceable process documentation, laboratories may integrate the unit into broader data acquisition systems using optional analog 0–10 V or 4–20 mA output modules (not included). When deployed in regulated environments (e.g., pharmaceutical manufacturing per FDA 21 CFR Part 11), users are responsible for establishing audit trails through external logging hardware or validated SCADA interfaces, as the device itself does not store historical data or support user authentication.

Applications

• Preparation of high-viscosity polymer solutions and thermoplastic melts in materials science labs.
• Homogenization of ceramic slurries and battery electrode pastes prior to coating or casting.
• Continuous stirring of microbial culture media in bioprocess development workflows.
• Dispersion of nanomaterials (e.g., graphene oxide, metal oxides) in solvent-based matrices.
• Stabilization of emulsions and suspensions during formulation screening in cosmetics and pharma R&D.
• Supporting ASTM D1893 (viscosity of asphalt binders) and ISO 2555 (apparent viscosity of polymer solutions) test protocols when configured with standardized spindles and calibrated vessels.

FAQ

Is the WB2000-B1 suitable for use with corrosive solvents such as concentrated acids or halogenated hydrocarbons?

The motor housing and base structure are resistant to mild aqueous and organic solvents, but direct exposure to strong oxidizers (e.g., HNO₃, Cl₂-containing media) or prolonged contact with chlorinated solvents requires additional chemical shielding or custom PTFE-coated mounting accessories.
Can this stirrer be mounted on a reactor with a side port or angled entry?

Yes—the universal clamp supports vertical, angled, or offset mounting configurations, provided mechanical stability and shaft alignment are verified per DIN 28120 guidelines for overhead agitator installation.
Does WIGGENS provide validation documentation (IQ/OQ/PQ) for GMP-regulated facilities?

Factory calibration certificates are available upon request; however, site-specific IQ/OQ/PQ protocols must be developed and executed by the end user or qualified third-party service provider in accordance with EU Annex 15 and ASTM E2500.
What impeller types are recommended for shear-sensitive biological samples?

Low-shear propeller or marine-style impellers with pitch optimization for laminar flow are advised; avoid anchor or disc paddles unless viscosity exceeds 10,000 cP and mixing time is non-critical.
Is firmware upgrade capability supported?

No—this model features fixed-function logic and does not include USB, Bluetooth, or Ethernet interfaces for firmware modification or remote control.