Leici JB-80D Multi-Station Magnetic Stirrer

Overview

The Leici JB-80D Multi-Station Magnetic Stirrer is an engineered solution for laboratories requiring simultaneous, independent, or synchronized agitation across multiple samples under controlled conditions. Designed around a modular architecture, the system comprises a central control unit and two optional expansion modules—JB-80D-1 (left station module) and JB-80D-2 (right station module)—enabling flexible configurations: 4-station (base), 8-station (dual-module), or 12-station (with additional accessory trays). Each station operates on the principle of magnetic coupling: a rotating permanent magnet beneath the metal work surface induces torque on a submerged stir bar, enabling contactless mixing without mechanical seals or moving parts penetrating the vessel. This design ensures high reproducibility, minimal contamination risk, and compatibility with sealed or sterile environments—critical for QC testing, formulation development, dissolution studies, and parallel reaction screening.

Key Features

• Full-color LCD touchscreen interface with real-time speed display and intuitive navigation
• Adjustable rotational speed range from 100 to 1800 rpm, calibrated to ±10 rpm accuracy and stabilized within ±10 rpm over 4 hours
• Programmable timer function with resolution up to 1 minute and total range up to 99 h 59 min (±1 min/h accuracy)
• Multi-mode rotation control: forward, reverse, and alternating direction sequences for enhanced suspension homogeneity and particle dispersion
• Quick-start functionality with automatic recall of last-used speed setting upon power-up
• Optimized magnetic field geometry supporting stable rotation of standard Φ6 × 20 mm stir bars across volumes from 10 mL to 400 mL per station
• Modular scalability: base unit supports direct integration of left/right modules for 8- or 12-point configurations without external controllers
• Dual-control logic: stations may be operated in synchronized mode (identical speed/timer settings) or independently (partitioned control), configurable via touchscreen

Sample Compatibility & Compliance

The JB-80D accommodates a broad range of vessel geometries—including beakers, flasks, and custom reaction vessels—provided they are non-magnetic and placed directly on the coated metal work surface. Its robust electromagnetic drive system maintains consistent torque delivery even with viscous solutions (up to ~500 mPa·s) and low-density stir bars. The device complies with IEC 61010-1:2010 safety standards for laboratory electrical equipment and meets EMC requirements per EN 61326-1. While not certified for use in classified hazardous locations (e.g., ATEX Zone 1), it is suitable for general-purpose labs operating under GLP-compliant workflows where instrument usage logs, parameter traceability, and environmental monitoring (temperature/humidity) are maintained per internal SOPs.

Software & Data Management

The JB-80D operates as a standalone embedded system with no PC dependency; all operational parameters are stored locally in non-volatile memory. Though it does not feature USB/Ethernet connectivity or cloud synchronization, its timer and speed history—along with power-cycle retention of user presets—supports basic audit readiness for routine lab documentation. For regulated environments requiring electronic records per FDA 21 CFR Part 11, external logging (e.g., via time-stamped video capture or manual entry into LIMS) is recommended. Firmware updates are performed via secure manufacturer-provided service protocols—not end-user accessible—to preserve calibration integrity and functional consistency.

Applications

• Parallel dissolution testing in pharmaceutical QA/QC according to USP
• Buffer preparation and reagent homogenization in molecular biology and clinical diagnostics labs
• Catalyst suspension and slurry mixing in materials science synthesis workflows
• Standardized sample conditioning prior to pH, conductivity, or titration analysis
• Long-duration stability studies requiring unattended, low-shear agitation over extended periods
• Teaching laboratories where multi-student experimental setups demand identical or differentiated stirring conditions

FAQ

What is the maximum viscosity this stirrer can handle reliably?
The JB-80D is optimized for aqueous and low-to-medium viscosity liquids (≤500 mPa·s) at full speed. For higher viscosities, reduced speed ranges (e.g., 200–800 rpm) and larger-diameter stir bars (e.g., Φ8 × 30 mm, optional) are recommended to maintain vortex formation and bottom-layer mixing.
Can the JB-80D be used with corrosive solvents such as concentrated acids or organic halides?
The metal work surface is coated with chemically resistant epoxy-polyester finish; however, prolonged exposure to strong oxidizers (e.g., HNO₃, Cl₂-generating mixtures) or chlorinated solvents may degrade coating integrity. Use glass or PTFE-coated stir bars and verify solvent compatibility with the surface coating before extended operation.
Is calibration certification available for the JB-80D?
Leici provides factory calibration verification reports upon request. On-site recalibration services are offered through authorized service centers in APAC regions; traceability is maintained to national metrology institutes (e.g., NIM China) per ISO/IEC 17025 guidelines.
Does the system support external triggering or analog signal output?
No. The JB-80D has no analog I/O ports, TTL triggers, or programmable logic interfaces. It functions exclusively as a manually or timer-controlled stand-alone unit.
How is thermal management handled during extended operation?
Passive convection cooling is integrated into the chassis design. Internal temperature rise remains below 15 K above ambient after 8 h continuous operation at 1800 rpm across all stations, verified per IEC 60068-2-2 thermal testing protocols.