SCILOGEX MS-PA Heated Magnetic Stirrer

Overview

The SCILOGEX MS-PA Heated Magnetic Stirrer is a compact, microprocessor-controlled laboratory instrument engineered for precise and stable agitation of liquid samples under controlled thermal conditions. It operates on the principle of magnetic coupling: a rotating permanent magnet beneath the heated plate induces synchronous rotation of a magnetic stir bar immersed in the sample vessel. Integrated resistive heating elements enable simultaneous temperature elevation of the sample plate, facilitating applications requiring both mixing and thermal conditioning—such as dissolution testing, buffer preparation, reagent homogenization, and pre-heating prior to analytical workflows. Designed for benchtop use in QC laboratories, academic research settings, and pharmaceutical development environments, the MS-PA delivers consistent rotational performance across its full 100–1500 rpm range while maintaining mechanical stability and thermal uniformity over extended operation.

Key Features

• Microprocessor-based closed-loop feedback control system continuously monitors and corrects rotational speed in real time, ensuring high reproducibility and minimal deviation (< ±3% at setpoint) even under variable load or viscosity conditions.
• Dual LED display simultaneously shows both user-set speed and real-time measured speed, enabling immediate verification of operational fidelity without external instrumentation.
• Flame-retardant polymer plate surface (φ135 mm) provides chemical resistance to common solvents and acids, while supporting standard glassware up to 3 L capacity with appropriate stir bar selection (max. 50 mm length).
• Universal power input (100–240 VAC, 50/60 Hz) ensures compatibility with global electrical infrastructure, eliminating the need for voltage converters in multi-site or international lab deployments.
• IP42-rated enclosure protects internal electronics from dust ingress and vertically falling water droplets—meeting minimum environmental robustness requirements for ISO/IEC 17025-accredited laboratories.
• Compact footprint (150 × 260 × 80 mm) and lightweight design (1.8 kg) facilitate easy integration into fume hoods, glove boxes, or modular lab furniture systems without compromising workspace efficiency.

Sample Compatibility & Compliance

The MS-PA accommodates a broad range of container geometries—including beakers, Erlenmeyer flasks, and cylindrical vials—provided they are placed centrally on the plate and contain an appropriately sized magnetic stir bar. Compatibility extends to aqueous solutions, organic solvents (e.g., ethanol, acetone), dilute acids and bases, and low-viscosity suspensions (up to ~500 mPa·s). The device complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets RoHS Directive 2011/65/EU for hazardous substance restrictions. While not certified for Class I Division 1 hazardous locations, its flame-retardant housing and thermal cutoff circuitry align with general GLP-compliant lab practices for non-explosive environments.

Software & Data Management

The MS-PA operates as a standalone analog-digital hybrid instrument with no embedded data logging or PC connectivity. All operational parameters—including speed setpoint, real-time speed, and thermal status—are displayed locally via the dual-segment LED interface. No software drivers, firmware updates, or cloud synchronization are required, minimizing validation overhead in regulated environments. For labs requiring audit trails, manual recording of setpoints and durations is recommended per SOP documentation protocols aligned with FDA 21 CFR Part 11 principles for handwritten entries. The absence of network interfaces inherently satisfies cybersecurity baseline requirements for isolated instrumentation in GMP manufacturing support labs.

Applications

• Routine buffer and media preparation in microbiology and cell culture workflows.
• Dissolution testing of solid dosage forms under USP and Ph. Eur. 2.9.3 guidelines, where consistent agitation velocity directly impacts release profile accuracy.
• Homogenization of calibration standards for spectrophotometric and chromatographic analysis.
• Pre-warming of reaction mixtures prior to enzymatic assays or PCR setup.
• Controlled stirring during titration or pH adjustment procedures requiring continuous mixing without mechanical contamination.
• Supporting ASTM D4052 density measurements where sample temperature stabilization and uniform dispersion are critical prior to hydrometer or digital densitometer analysis.

FAQ

Does the MS-PA support external temperature probe feedback control?

No. The unit regulates only plate surface temperature via fixed-power resistive heating; it does not incorporate a PID loop with external RTD or thermocouple input.
Can the MS-PA be used with metal containers?

No. Ferromagnetic or conductive vessels (e.g., stainless steel beakers) will impede magnetic coupling and may cause overheating or erratic rotation.
Is the stir bar included with the instrument?

No. Stir bars must be selected separately based on vessel size, viscosity, and required torque; SCILOGEX recommends PTFE-coated elliptical bars (e.g., 30 mm or 40 mm) for optimal performance with this model.
What maintenance is required for long-term reliability?

Periodic cleaning of the plate surface with isopropyl alcohol and inspection of the stir bar for coating integrity are sufficient; no lubrication or internal servicing is specified by the manufacturer.
Does the unit meet CE marking requirements?

Yes. The MS-PA carries CE marking per the Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU), verified through third-party notified body assessment.