WIGGENS S-1/B-1 Waterproof Separated-Control Magnetic Stirrer

Overview

The WIGGENS S-1/B-1 Waterproof Separated-Control Magnetic Stirrer is an engineered solution for precise, reliable agitation in demanding laboratory environments where moisture, condensation, or immersion conditions are unavoidable. Designed around a brushless DC motor and fully encapsulated magnetic drive system, it operates via rotating magnetic field coupling—eliminating mechanical seals and shaft penetrations that compromise integrity in wet settings. Its polypropylene housing provides inherent resistance to aqueous solutions, weak acids, alkalis, and common organic solvents, enabling safe deployment directly inside water baths, humidity chambers, or temperature-controlled enclosures. The separated-control architecture decouples the motor unit from the user interface: the stirrer head remains submerged or enclosed while the controller—mounted externally—delivers real-time speed adjustment without exposing electronics to environmental stress. This configuration supports continuous operation across a validated thermal envelope of 0–+60 °C, making it suitable for applications requiring stable thermal management alongside consistent mixing performance.

Key Features

• IP67-rated polypropylene housing ensures full protection against temporary immersion (up to 1 m for 30 min) and high-humidity exposure.
• Brushless DC motor delivers smooth, low-vibration rotation from 100 to 1500 rpm with ±2 rpm speed stability under load.
• Separate controller design (CS-series for S-1; CB-series for B-1) enables remote operation up to 1 m distance via shielded 2.5 mm mini-jack cable.
• Scalable control options: CS-1/CB-1 support single-unit speed regulation; CS-4/CB-4 allow synchronized or independent speed control of up to four stirrers.
• No external cooling fan or ventilation grilles—minimizes contamination risk and simplifies cleaning in GLP-compliant workflows.
• Integrated thermal monitoring circuitry prevents motor overheating during extended operation at elevated ambient temperatures.

Sample Compatibility & Compliance

The S-1/B-1 accommodates standard laboratory vessels including glass beakers (10–1000 mL for S-1; 50–3000 mL for B-1), polymer reaction flasks, and jacketed reactors. Its magnetic coupling mechanism maintains efficiency with PTFE- or glass-coated stir bars up to 40 mm in length. The device complies with EU Directive 2014/30/EU (EMC), 2011/65/EU (RoHS), and carries CE marking for conformity with health, safety, and environmental protection standards. While not intrinsically rated for explosive atmospheres, its non-sparking motor design and chemical-resistant construction align with general-purpose ISO/IEC 17025 laboratory infrastructure requirements. No calibration certificate is supplied ex-factory; users are advised to verify rotational speed accuracy using traceable tachometry per ASTM E29-23 guidelines prior to critical QC applications.

Software & Data Management

This analog-controlled stirrer does not incorporate digital connectivity (e.g., USB, Bluetooth, or Ethernet). All operational parameters are adjusted manually via front-panel rotary potentiometers on the CS/CB controllers. However, its predictable mechanical response and stable speed output enable seamless integration into validated processes governed by 21 CFR Part 11–compliant systems when paired with external data loggers (e.g., calibrated thermocouple + RPM sensor + time-stamped acquisition module). Audit trails for speed settings must be maintained manually or via connected LIMS entries referencing batch records and equipment usage logs. Firmware updates are not applicable; hardware revisions follow WIGGENS’ documented change control procedures per ISO 9001:2015.

Applications

• Long-duration dissolution testing in USP Apparatus II baths (temperature-stabilized at 37 °C ± 0.5 °C).
• Homogenization of aqueous polymer dispersions in climate-controlled stability chambers (40 °C/75% RH).
• Buffer preparation and reagent blending within refrigerated or heated incubators.
• Cell culture media conditioning under sterile hood conditions—where splash resistance reduces decontamination frequency.
• Accelerated corrosion studies involving saline or acidic electrolytes at controlled temperatures.
• Multi-vessel parallel synthesis setups using CS-4/CB-4 controllers to maintain inter-batch consistency.

FAQ

Can the S-1/B-1 be used continuously at 60 °C ambient temperature?
Yes—the motor and electronics are thermally derated to sustain uninterrupted operation within the full 0–+60 °C range, provided airflow around the controller is unobstructed.
Is the stirrer compatible with aggressive solvents like chloroform or acetone?
Polypropylene exhibits limited resistance to halogenated and ketonic solvents; prolonged exposure may cause surface crazing. Consult WIGGENS’ chemical compatibility chart before use.
Does the device meet FDA requirements for pharmaceutical manufacturing?
It is not certified for direct GMP production use but is widely deployed in R&D, analytical method development, and pre-formulation labs operating under GLP principles.
What is the expected service life under typical lab conditions?
With proper maintenance (e.g., periodic stir bar inspection, avoidance of dry-running), mean time between failures exceeds 20,000 hours per IEC 61508 reliability modeling.
Can multiple S-1 units be daisy-chained to one CS-4 controller?
Yes—CS-4 supports up to four S-1 stirrers simultaneously, each adjustable independently via dedicated channel knobs.