Truelab AMM-6/9/12 Multi-Position Temperature-Controlled Magnetic Stirrer (6-, 9-, and 12-Station Configurations)

Overview

The Truelab AMM-6/9/12 is a precision-engineered multi-position magnetic stirrer designed for laboratories requiring simultaneous, independent thermal and mechanical control across multiple samples. Utilizing rotating permanent magnets driven by low-noise micro-motors, the system generates uniform rotating magnetic fields that actuate standard PTFE- or glass-coated magnetic stir bars within vessels placed on the heated plate. Integrated PID temperature regulation ensures stable thermal environments from ambient up to 120 °C, while individual position control enables heterogeneous experimental protocols—such as gradient-based reaction optimization or parallel sample preparation—without cross-interference. Its compact, ultra-thin profile (55 mm height) and corrosion-resistant PTFE-coated aluminum plate support long-term reliability in aggressive chemical environments common in pharmaceutical development, synthetic chemistry, and quality control labs.

Key Features

• Independent speed and temperature control per station—no shared controller dependency
• PTFE (Teflon®)-coated anodized aluminum heating plate for rapid, uniform heat transfer and resistance to acids, bases, and organic solvents
• Microprocessor-based PID temperature regulation with ±1 °C stability over full operating range (ambient to 120 °C)
• 0–1500 rpm continuous variable speed control with digital feedback and <5% positional speed deviation
• Optimized 90 mm inter-station spacing to accommodate standard round-bottom flasks, beakers, and vials without magnetic coupling interference
• Low-profile mechanical architecture (55 mm height) minimizes benchtop footprint and improves ergonomic access
• Overheat protection circuitry and auto-shutdown on sensor failure ensure compliance with IEC 61010-1 safety standards

Sample Compatibility & Compliance

The AMM-6/9/12 accommodates vessels ranging from 10 mL test tubes to 400 mL beakers or round-bottom flasks, supporting common laboratory glassware and chemically resistant plastics (e.g., PP, PTFE-lined containers). Each position accepts stir bars up to 40 mm in length with magnetic moment sufficient for viscous media up to 1000 mPa·s. The device meets general-purpose laboratory equipment requirements under ISO/IEC 17025:2017 for method validation support and is routinely deployed in GLP-compliant environments where traceable thermal and rotational parameters are required. While not intrinsically certified for hazardous locations, its non-sparking motor design and sealed electronics make it suitable for use in standard fume hoods and controlled ambient labs.

Software & Data Management

The AMM-6/9/12 operates via front-panel membrane keypad with LED display; no proprietary software or PC interface is included. All operational parameters—including setpoints, real-time plate temperature, and active station status—are locally visible and manually logged. For integration into validated workflows, users may employ external data loggers connected to the unit’s analog output (optional accessory) or document settings per position using standardized lab notebooks aligned with FDA 21 CFR Part 11 principles for handwritten records. Audit trails are maintained through procedural SOPs rather than embedded electronic logging—a design consistent with cost-optimized, high-reliability benchtop instrumentation.

Applications

• Parallel synthesis and screening of catalysts, polymers, or APIs under controlled thermal and mixing conditions
• Buffer and reagent preparation in molecular biology and diagnostic assay development
• Dissolution testing and solubility profiling in pharmaceutical QC labs
• pH adjustment and homogenization of cell culture media or fermentation broths
• Pre-concentration and solvent exchange steps in sample prep for HPLC, GC, or ICP-MS analysis
• Calibration verification of viscometers and density meters using standardized reference fluids

FAQ

Can the AMM-6/9/12 be used with metal containers or ferromagnetic vessels?

No—only non-magnetic, thermally conductive vessels (e.g., borosilicate glass, quartz, ceramic, or PTFE) are compatible. Ferrous materials disrupt magnetic coupling and impair temperature uniformity.
Is calibration documentation provided with the unit?

Factory calibration certificates for temperature and speed sensors are available upon request and comply with ISO/IEC 17025 traceability to NIST standards.
What maintenance is required to ensure long-term accuracy?

Annual verification of plate temperature uniformity (using calibrated PT100 probes at 3–5 positions) and visual inspection of PTFE coating integrity are recommended. No user-serviceable moving parts require lubrication or replacement.
Does the unit support external temperature probe input for sample-specific feedback control?

No—the system uses built-in surface-mounted RTD sensors for plate temperature regulation only. Sample-in-vessel temperature monitoring requires separate immersion probes and external controllers.
Are replacement stir plates or PTFE-coated assemblies available as spare parts?

Yes—Truelab offers OEM-certified replacement plates (part numbers AMM-PLATE-6, AMM-PLATE-9, AMM-PLATE-12) with full PTFE re-coating and dimensional certification.