Corning Digital Magnetic Stirrer with Heating

Overview

The Corning Digital Magnetic Stirrer with Heating is a compact, microprocessor-controlled laboratory instrument engineered for precision mixing and temperature-regulated sample preparation in demanding research, quality control, and teaching environments. Utilizing permanent magnet coupling and controlled electromagnetic rotation, it delivers consistent agitation of aqueous, organic, and viscous solutions—without mechanical shafts or seals that compromise sterility or introduce contamination. Its integrated heating element, embedded beneath a Pyroceram® glass-ceramic top plate, enables uniform thermal distribution across the entire surface, minimizing hot spots and ensuring reproducible reaction kinetics. Designed specifically for space-constrained laboratories—including biosafety cabinets, fume hoods, and modular benchtop configurations—the unit’s low-profile form factor (12.4 cm height) supports seamless integration into regulated workflows requiring traceable, repeatable thermal and mechanical input.

Key Features

• Pyroceram® glass-ceramic heating surface: Chemically inert, scratch-resistant, and thermally stable up to 500°C; provides high-contrast white background for visual monitoring of colorimetric reactions.
• Dual digital LED display: Simultaneously shows real-time stirring speed (0–1200 rpm) and surface temperature (ambient to 500°C); temperature setpoint confirmed by flashing indicator until target is reached.
• Microprocessor-based control architecture: Maintains ±2°C temperature stability and ±10 rpm speed consistency under variable load conditions; eliminates manual recalibration.
• Multi-layer safety system: Includes surface overtemperature alert (LED activation at >60°C), independent thermal cut-off switch, and optional external probe (Cat. No. 6795PR) that disables heating if not immersed in liquid.
• UL and cUL listed: Compliant with North American electrical safety standards (UL 61010-1); suitable for use in GLP-compliant laboratories and ISO 17025-accredited testing facilities.
• Modular mounting compatibility: Integrates directly with Corning Support Stand (Cat. No. 440129) for vertical alignment of pH electrodes, thermometers, burettes, or reflux condensers without obstructing access or airflow.

Sample Compatibility & Compliance

The Corning Digital Magnetic Stirrer accommodates standard laboratory vessels ranging from 10 mL test tubes to 4 L beakers, provided magnetic stir bars are appropriately sized (e.g., 15–40 mm length, PTFE- or glass-coated). It is compatible with corrosive reagents including concentrated acids, alkalis, and halogenated solvents—thanks to the non-porous, chemically resistant Pyroceram® surface. The device meets ASTM E2913-22 requirements for performance verification of magnetic stirrers used in analytical method development and does not interfere with adjacent instrumentation due to EMI-shielded motor design. For regulated applications, its discrete thermal cut-off and surface temperature logging capability (when paired with external probe and data logger) support audit readiness per FDA 21 CFR Part 11 when implemented within validated SOPs.

Software & Data Management

While the base unit operates as a standalone analog-digital hybrid controller, its external temperature probe interface (6795PR) enables connection to third-party data acquisition systems via 0–5 V analog output. Users may log time-stamped temperature and speed data using LabVIEW, MATLAB, or Excel-compatible DAQ platforms—facilitating trend analysis, batch record generation, and deviation investigation. Though no proprietary software is bundled, the device’s deterministic response time (<3 sec to 95% setpoint) and stable steady-state operation make it suitable for integration into automated workflows governed by IEC 62304-compliant control architectures.

Applications

• Buffer and media preparation in cell culture and molecular biology labs
• Controlled dissolution testing per USP and Ph. Eur. 2.9.3 protocols
• Homogenization of nanoparticle suspensions prior to DLS or TEM analysis
• Accelerated stability studies requiring precise thermal ramping and agitation synergy
• Titration support setups where simultaneous pH monitoring and mixing are required
• Teaching laboratories demonstrating Arrhenius kinetics, Le Chatelier’s principle, or solubility equilibria

FAQ

Can this stirrer maintain temperature accuracy inside the solution, not just on the plate?
Yes—when used with the optional Corning External Temperature Probe (Cat. No. 6795PR), the system regulates based on actual solution temperature rather than surface reading, achieving ±0.5°C accuracy in calibrated water baths.
Is the Pyroceram® surface autoclavable?
No—the top plate is not designed for steam sterilization; however, it withstands repeated wipe-downs with 70% ethanol, 10% bleach, or acetone without degradation.
Does the unit support continuous operation for 24/7 applications?
Yes—rated for indefinite duty cycle under ambient temperatures ≤30°C and relative humidity ≤80% non-condensing; fanless design ensures silent, maintenance-free operation.
What is the maximum viscosity this stirrer can handle effectively?
Up to 10,000 cP with appropriate stir bar selection (e.g., cross-shaped or octagonal geometry) and vessel geometry optimization; performance decreases above 25°C ambient without active cooling.
Are replacement parts like stir bars or support stands available through Corning?
Yes—Corning offers certified PTFE-coated stir bars (Cat. No. 430225 series), support stands (Cat. No. 440129), and external probes (Cat. No. 6795PR) with full traceability and documented shelf-life specifications.