GLTLab SHA-2-2D Precision Heated Magnetic Stirrer with 7-inch Aluminum Heating Plate

Overview

The GLTLab SHA-2-2D is a high-performance heated magnetic stirrer engineered for precision temperature-controlled mixing in analytical, quality control, and synthetic chemistry laboratories. It operates on the principle of rotating magnetic fields generated beneath a thermally stable ceramic-coated aluminum heating plate to drive PTFE- or glass-coated stirring bars within vessels. Unlike conventional hotplate stirrers with limited thermal uniformity, the SHA-2-2D integrates dual-mode temperature control—direct plate surface regulation and solution-sensing via an external PT1000 probe—to enable accurate, reproducible thermal management across diverse vessel geometries and volumes up to 20 L. Its robust architecture supports continuous operation under demanding conditions, including viscous media handling and extended heating cycles required for dissolution testing, catalyst activation, and buffer equilibration.

Key Features

• 7-inch (178 mm) ceramic-coated aluminum heating plate offering rapid thermal response, excellent corrosion resistance, and uniform heat distribution across the active zone
• Dual temperature control mode: independent setpoint configuration for plate surface (35–400 °C) and solution phase (35–200 °C), with real-time feedback from integrated PT1000 sensor
• High-resolution digital LED display with intuitive interface for simultaneous monitoring of speed (150–1500 rpm), plate temperature, and solution temperature
• Temperature setting resolution of 0.1 °C for solution mode and 1 °C for plate mode; thermal stability maintained within ±1 °C at setpoint under steady-state conditions
• PT1000 sensor calibration function enabling user-adjustable offset correction to ensure traceable accuracy compliant with internal lab SOPs
• Overheat protection with visual thermal warning indicator and automatic shutdown if surface temperature exceeds safe operational limits
• Universal power input (100–130 V / 200–240 V, 50/60 Hz) and IP21-rated enclosure suitable for standard laboratory environments with ambient humidity ≤80% RH

Sample Compatibility & Compliance

The SHA-2-2D accommodates round-bottom flasks, beakers, and jacketed reactors from 50 mL to 20 L capacity, provided magnetic stir bars (30–80 mm length) are appropriately sized for viscosity and vessel depth. It complies with IEC 61010-1:2010 safety standards for electrical equipment used in laboratory settings. While not certified for Class I Division 1 hazardous locations, its non-sparking design and sealed electronics meet general-purpose requirements for use with organic solvents and aqueous solutions. For regulated environments, the device supports audit-ready documentation when paired with optional external logging systems—its analog/digital outputs (available upon request) facilitate integration into GLP/GMP workflows requiring temperature and speed traceability.

Software & Data Management

The SHA-2-2D operates as a standalone instrument with no embedded software stack. However, it offers analog voltage outputs (0–5 V or 0–10 V configurable) for plate temperature and rotational speed, compatible with third-party data acquisition systems (e.g., LabVIEW, MATLAB, or SCADA platforms). Optional RS-485 Modbus RTU communication enables remote parameter setting and real-time telemetry in automated lab networks. When configured with an external PT1000 probe and connected to validated data loggers, the system satisfies FDA 21 CFR Part 11 requirements for electronic records—provided appropriate access controls, audit trails, and electronic signatures are implemented at the host system level.

Applications

• Dissolution testing per USP and Ph. Eur. 2.9.3, where precise solution temperature maintenance at 37.0 ± 0.5 °C is critical for drug release profiling
• Catalytic reaction optimization in fine chemical synthesis, supporting controlled ramp-and-hold thermal protocols
• Preparation of homogeneous buffers, standards, and calibration solutions requiring both thermal equilibration and mechanical homogenization
• Viscosity-dependent mixing of polymer solutions, colloidal suspensions, and nanoparticle dispersions where shear rate consistency must be preserved across temperature gradients
• QC/QA workflows in food, pharmaceutical, and environmental labs adhering to ISO/IEC 17025 requirements for equipment calibration and performance verification

FAQ

Can the SHA-2-2D maintain temperature accuracy in open vessels during prolonged heating?

Yes—the external PT1000 probe allows direct immersion in the solution, enabling closed-loop feedback that compensates for evaporative cooling and ambient drafts.
Is the heating plate compatible with glass-bottomed vessels?

Yes, the ceramic coating provides thermal insulation and prevents micro-fracture risks associated with direct metal-to-glass contact.
Does the unit support programmable time-based protocols?

Not natively; however, optional timer modules or external PLC integration can implement multi-step ramp/hold sequences.
What is the maximum recommended viscosity for stable stirring at 1500 rpm?

Up to 10,000 mPa·s using a 60 mm elliptical stir bar in a 1 L beaker—performance varies with geometry and thermal expansion effects.
How frequently should the PT1000 sensor be recalibrated?

Annually or per internal SOP; field calibration using NIST-traceable reference baths is supported via the built-in offset adjustment function.