ChemTron 66306 Inductive Magnetic Drive Multi-Position Hotplate Stirrer

Overview

The ChemTron 66306 Inductive Magnetic Drive Multi-Position Hotplate Stirrer is an engineered solution for laboratories requiring parallel, thermally controlled magnetic stirring across multiple samples. Unlike conventional stirrers relying on direct mechanical coupling or eddy-current heating, this system employs inductive magnetic drive technology—where a rotating magnetic field generated beneath the ceramic-coated aluminum hotplate couples with PTFE-coated magnetic stir bars without physical contact. This design eliminates wear-prone drive shafts and ensures long-term reliability, especially under continuous operation in QC, pharmaceutical development, and materials synthesis workflows. The unit supports up to six independent positions, each with fully adjustable speed and temperature control, enabling reproducible sample processing for applications including solvent evaporation, concentration optimization, cell culture maintenance, and high-throughput reagent preparation.

Key Features

• Inductive magnetic drive architecture: No moving parts in contact with the hotplate surface—minimizes contamination risk and extends service life.
• Six precisely spaced stirring positions (130 mm center-to-center), optimized for standard labware including 50–1000 mL beakers and round-bottom flasks.
• Independent digital control per position for both stirring speed (100–2000 rpm) and plate temperature (0–200 °C), with ±1 °C thermal stability at setpoint.
• Four-level power modulation (25%, 50%, 75%, 100%) per position allows fine-tuned torque delivery for viscous or low-volume samples.
• Ceramic-aluminum composite heating surface offers rapid thermal response, uniform heat distribution, and chemical resistance to common solvents and acids.
• Integrated safety features include overtemperature cutoff, dry-run detection (via thermal impedance monitoring), and automatic shutdown after 24-hour idle timeout.
• Compact footprint (250 × 430 × 75 mm) and 15 kg mass support benchtop integration into automated workstations or laminar flow hoods.

Sample Compatibility & Compliance

The ChemTron 66306 accommodates a wide range of vessel geometries and volumes—from microcentrifuge tubes (with appropriate low-profile stir bars) to 1500 mL tall-form beakers. Its open-platform design permits use with glass, borosilicate, polypropylene, and stainless-steel containers, provided magnetic coupling remains effective (i.e., wall thickness ≤ 8 mm and non-ferromagnetic composition). The device complies with IEC 61010-1:2010 for laboratory electrical equipment safety and meets EMC requirements per EN 61326-1:2013. While not intrinsically rated for hazardous environments, its solid-state controls and sealed electronics make it suitable for ISO Class 5–7 cleanrooms when operated with appropriate gowning and airflow protocols. It supports GLP documentation practices through manual logbook correlation; optional RS-232 or USB interface kits (sold separately) enable timestamped parameter export for audit-ready records.

Software & Data Management

The 66306 operates via front-panel membrane keypad with dual-line LCD display showing real-time rpm and °C per active position. Though standalone by default, it is compatible with ChemTron’s optional LabLink™ Serial Interface Module (P/N LL-SI-01), which enables ASCII command protocol communication for integration into LabVIEW, Python-based automation frameworks, or LIMS systems. When paired with compliant software, the unit supports basic 21 CFR Part 11 functionality—including operator ID entry, parameter change logging, and electronic signature prompts—provided the host system implements required audit trail and access control layers. All calibration constants (e.g., thermal offset, speed linearity) are stored in non-volatile memory and retain settings after power cycle.

Applications

• Parallel sample concentration in analytical chemistry workflows prior to LC-MS or GC-MS injection.
• Controlled solvent removal during peptide synthesis or small-molecule purification under inert atmosphere (when used with glovebox-compatible vessels).
• Temperature- and agitation-stabilized buffer equilibration for chromatography column conditioning.
• High-throughput formulation screening in excipient compatibility studies (e.g., solubility mapping across pH/temperature gradients).
• Cell suspension maintenance in pre-incubation steps for microbiological assays requiring homogeneous nutrient distribution.
• Accelerated aging studies where thermal cycling and mechanical agitation simulate long-term storage conditions.

FAQ

Can the 66306 accommodate stir bars larger than 40 mm?
Yes—maximum stir bar length is determined by vessel geometry and viscosity; the inductive field supports bars up to 50 mm in length when used with low-viscosity media (< 500 mPa·s) and vessels ≥ 500 mL.
Is temperature calibration traceable to NIST standards?
Factory calibration is performed using NIST-traceable RTD probes; users may perform field verification with external Class A PT100 sensors—calibration adjustment requires authorized service technician access.
Does the unit support programming ramp-and-hold temperature profiles?
No—the 66306 provides static setpoint control only; dynamic profiling requires external programmable temperature controller interfaced via analog output.
What is the expected lifetime of the induction coil assembly?
Rated for > 20,000 hours of continuous operation at 75% power load under ambient temperatures ≤ 35 °C and relative humidity < 80% non-condensing.
Are replacement hotplates available as spare parts?
Yes—ceramic-aluminum hotplate assemblies (P/N HP-66306-CER) are stocked and field-replaceable with standard Torx tools; no recalibration required post-installation.