GLTlab SHA-1-SS Stainless Steel Constant-Temperature Magnetic Stirring Hot Plate with Oil/Water Bath Capability

Overview

The GLTlab SHA-1-SS is a precision-engineered constant-temperature magnetic stirring hot plate designed for reliable thermal control and homogeneous mixing in laboratory environments. It integrates dual functionality—serving as both a water bath and oil bath heating platform—while delivering precise temperature regulation across a broad operational range (35–400 °C). Unlike conventional hot plates with passive heating, the SHA-1-SS employs a closed-loop PID temperature control system with real-time feedback from an optional external PT1000 platinum resistance thermometer, enabling stable thermal maintenance within ±1 °C. Its ceramic-coated aluminum heating surface ensures uniform heat distribution, rapid thermal response, and chemical resistance against common solvents and reagents. The unit’s stainless steel housing provides mechanical robustness and corrosion resistance, supporting long-term use in QC labs, synthetic chemistry workflows, and materials preparation protocols where reproducible thermal-mixing conditions are critical.

Key Features

• Stainless steel enclosure with IP20-rated ingress protection for lab-grade durability and cleanability
• Ceramic-coated aluminum heating plate (178 × 178 mm) offering high emissivity, low thermal inertia, and resistance to acid/alkali exposure
• Adjustable magnetic stirring speed from 150 to 1500 rpm with soft-start motor control to prevent vortex disruption or sample splashing
• Digital timer with programmable intervals from 1 second to 24 hours, supporting unattended operation under defined thermal-mixing protocols
• Integrated internal circulation system ensuring consistent temperature homogeneity across the 10 L bath volume without external recirculation pumps
• Front-panel LED display showing real-time setpoint, actual temperature, stirring speed, and remaining timer duration
• PT1000 sensor input port enabling external temperature monitoring at the sample location—critical for ISO/IEC 17025-compliant method validation

Sample Compatibility & Compliance

The SHA-1-SS accommodates standard laboratory glassware including round-bottom flasks (up to 5 L), beakers, and jacketed reactors compatible with water or silicone oil media. Its 400 °C upper limit supports high-boiling-point solvent applications (e.g., diphenyl ether, squalane) and polymerization reactions requiring extended thermal stability. The device meets CE marking requirements for electromagnetic compatibility (EN 61326-1) and low-voltage safety (EN 61010-1). While not certified for hazardous area use, its design conforms to general laboratory equipment guidelines per ISO 15190:2020 (laboratory safety management). For GLP/GMP-regulated environments, the unit supports audit-ready documentation when paired with validated PT1000 probes and calibrated traceable temperature loggers.

Software & Data Management

The SHA-1-SS operates as a standalone instrument with no proprietary software dependency. All operational parameters—including temperature setpoint, stirring speed, timer value, and real-time temperature—are accessible via the front-panel interface. For integration into automated workflows, the RS-232 communication port (optional accessory) enables bidirectional data exchange with LabVIEW, MATLAB, or custom SCADA systems. When used with compliant external data loggers, the unit supports 21 CFR Part 11–aligned electronic records, including user authentication, time-stamped event logs, and immutable parameter change history—essential for FDA-regulated pharmaceutical development and quality control laboratories.

Applications

• Controlled-temperature synthesis of metal-organic frameworks (MOFs) and coordination polymers in refluxing solvent systems
• Viscosity measurement pre-conditioning of polymer melts prior to rheological analysis
• Standardized dissolution testing per USP using calibrated oil bath media
• Enzyme kinetic assays requiring precise thermal stabilization of reaction mixtures over extended durations
• Preparation of calibration standards for ICP-MS and AAS where matrix homogeneity and thermal consistency directly impact detection limits
• Accelerated aging studies of battery electrolytes and encapsulant materials under elevated thermal stress

FAQ

Is the SHA-1-SS suitable for oil bath applications above 100 °C?
Yes—the unit is rated for continuous operation up to 400 °C and features thermal cutoff protection to prevent overheating during extended oil bath use.
Can the stirring function operate independently of heating?
No—the SHA-1-SS is configured as a heating-only magnetic stirrer; stirring requires simultaneous activation of the heating element.
What is the accuracy of the built-in temperature sensor versus an external PT1000 probe?
The internal sensor provides ±1 °C stability; external PT1000 probes (Class A tolerance) deliver ±0.15 °C accuracy at 100 °C, recommended for ISO 17025 traceability.
Does the unit support multi-step temperature ramping?
No—ramping profiles require external controller integration via RS-232; the front panel supports only single-setpoint operation.
How often should the ceramic coating be inspected for integrity?
Visual inspection is advised before each high-temperature (>250 °C) run; micro-cracking or discoloration indicates need for surface replacement to maintain thermal uniformity.