VELP AREC.T Ceramic-Plate Heating Magnetic Stirrer

Overview

The VELP AREC.T Ceramic-Plate Heating Magnetic Stirrer is an engineered laboratory instrument designed for precise, reproducible mixing and temperature-controlled sample preparation across analytical, quality control, and research workflows. Utilizing a permanent magnet-driven stirring mechanism coupled with resistive ceramic heating technology, the AREC.T delivers stable rotational agitation while maintaining accurate thermal regulation over extended durations. Its core architecture integrates microprocessor-based closed-loop speed and temperature control—ensuring consistent torque delivery even under variable viscosity conditions, such as during polymer dissolution or concentrated acid-base reactions. The device operates without mechanical shafts or seals, eliminating contamination pathways and enabling operation in open vessels under ambient or inert atmospheres. Designed for compliance with fundamental laboratory safety and electromagnetic compatibility standards (CE-marked per Directive 2014/30/EU and 2014/35/EU), the AREC.T supports routine use in GLP-compliant environments where traceability, operator safety, and process repeatability are critical.

Key Features

• White ceramic heating plate (180 mm diameter) offering exceptional chemical resistance, thermal stability up to 550 °C, and ease of decontamination between runs.
• Integrated microprocessor control system that dynamically compensates for load-induced viscosity changes—maintaining set speed within ±3% deviation across the full 0–1500 rpm range.
• LCD display with dual-parameter readout (actual speed and temperature), intuitive push-button interface, and real-time status indicators including active timer and alarm states.
• Independent thermal monitoring circuitry: activates visual high-temperature warning (flashing LED) when surface temperature exceeds 50 °C; alarm remains active until plate cools below threshold—preventing inadvertent contact injury.
• Programmable digital timer (0–999 minutes) with auto-shutdown function, supporting unattended operation for standardized digestion, extraction, or reaction protocols.
• Ergonomic tilted handle and elevated control panel placement—physically separated from the hot plate—to minimize heat transfer to user interface components and enhance operational safety.

Sample Compatibility & Compliance

The AREC.T accommodates standard laboratory glassware (e.g., beakers, Erlenmeyer flasks) and compatible metal containers up to 15 L volume (water-equivalent). Its non-porous ceramic surface resists corrosion from aggressive reagents including concentrated HCl, HNO₃, NaOH, and organic solvents—making it suitable for applications in environmental testing, pharmaceutical synthesis, and metallurgical sample preparation. The unit conforms to IP42 ingress protection (IEC/EN 60529), limiting dust entry and resisting vertically falling water droplets—appropriate for general-purpose lab benches but not wet-process or fume hood–integrated installations. While not certified for ATEX or IECEx hazardous area use, its electrical design complies with EN 61010-1:2010 for laboratory equipment safety.

Software & Data Management

The AREC.T operates as a standalone instrument without proprietary software or PC connectivity. All operational parameters—including speed setpoint, target temperature, timer duration, and elapsed time—are retained in non-volatile memory during power interruption. No audit trail, electronic signature, or 21 CFR Part 11 compliance features are implemented; therefore, manual logbook documentation is required for regulated workflows. For laboratories requiring integration into LIMS or automated reporting systems, external data acquisition via analog output (optional accessory) or third-party RS-232/USB interface modules may be considered—subject to validation per ISO/IEC 17025 requirements.

Applications

• Controlled heating and homogenization during titration procedures where visual endpoint detection relies on unobstructed vessel observation.
• Preparation of calibration standards and reference solutions requiring uniform thermal distribution and minimal evaporation loss.
• Digestion of soil, sludge, or biological matrices prior to heavy metal analysis (e.g., EPA Method 3050B).
• Solubilization of thermally stable polymers and resins in high-boiling-point solvents (e.g., DMF, NMP).
• Reaction monitoring in synthetic chemistry where simultaneous heating and agitation improve yield consistency.
• QC testing of viscosity modifiers, surfactants, and emulsion formulations under defined thermal profiles.

FAQ

Does the AREC.T support external temperature probe feedback for PID-controlled bath temperature?
No—the built-in temperature sensor measures only the ceramic plate surface temperature. It does not accept external Pt100 or thermocouple inputs for solution-phase temperature regulation.
Is the unit compatible with PTFE-coated stir bars for aggressive chemical environments?
Yes—standard PTFE- or glass-coated magnetic stir bars are fully compatible. Avoid ferrite-core stir bars at temperatures above 300 °C due to potential demagnetization.
Can the timer be paused or reset during operation?
The timer runs continuously once activated; pausing is not supported. However, the unit can be manually powered off and restarted without resetting the timer memory.
What maintenance is required for long-term reliability?
Routine cleaning of the ceramic plate with mild detergent and soft cloth is recommended after each use. No lubrication or internal calibration is required—microprocessor firmware and sensor calibration are factory-set and non-user-adjustable.
Is the AREC.T suitable for use inside a nitrogen-purged glovebox?
Yes—provided adequate ventilation and clearance around the unit’s rear ventilation grilles are maintained. Confirm compatibility with glovebox manufacturer regarding heat dissipation limits and electrical feedthrough specifications.