2mag maxMIX Industrial Magnetic Stirrer for High-Viscosity Media up to 150 L

Overview

The 2mag maxMIX is an industrial-grade magnetic stirrer engineered for reliable, high-torque mixing of large-volume and highly viscous samples—up to 150 L—in laboratory, pilot-scale, and quality control environments. Unlike conventional benchtop magnetic stirrers, the maxMIX employs a high-efficiency permanent magnet drive system with enhanced magnetic coupling strength, enabling consistent torque transmission through container bottoms up to 60 mm thick—including double-walled glass, stainless steel, or coated reactors. Its core principle relies on precise rotational force transfer via magnetic fields between the integrated motor-driven rotor and externally placed magnetic stir bars, eliminating mechanical shafts, seals, or moving parts in contact with the sample. This design ensures intrinsic contamination-free operation, full compatibility with sterile and GMP-critical workflows, and long-term stability under continuous duty cycles. Developed and manufactured in Germany, the maxMIX meets stringent European engineering standards for durability, electromagnetic compatibility (EMC), and functional safety—making it suitable for regulated applications in pharmaceutical development, chemical synthesis, bioprocess validation, and materials science.

Key Features

• Robust 40 W stirring power output optimized for high-viscosity media (e.g., polymer solutions, slurries, pastes, and cell culture broths)
• Adjustable soft-start function (20–99 s) ensures gentle yet reliable capture and centering of stir bars—even at low initial speeds or with oversized vessels
• Digital speed display and Quick-Set mode enable rapid parameter recall and reproducible setup across operators and shifts
• Fully sealed stainless steel housing (AISI 304) rated IP64 for dust resistance and protection against water splashes—enabling safe operation in wet lab environments and facilitating wash-down cleaning
• Over-speed and over-torque safeguards prevent glass vessel breakage and protect both equipment and operator
• State memory function retains last-used speed and soft-start settings after power-off, reducing setup time and minimizing procedural variability
• Compact footprint (265 × 320 mm) supports integration into fume hoods, biosafety cabinets, or modular reactor platforms

Sample Compatibility & Compliance

The maxMIX is validated for use with a wide range of container types—including borosilicate glass (Duran®, Pyrex®), stainless steel, and double-jacketed reactors—without compromising magnetic coupling efficiency. It is routinely deployed with 2mag’s proprietary ASTEROID 70 and SATELLITE 140 stir bars, both featuring FDA-compliant PTFE encapsulation and steam sterilization capability (121 °C, 20 min). The ASTEROID 70 delivers up to 4× higher torque transfer versus standard cylindrical stir bars, while its convex bearing surface and triangular geometry enhance shear generation at lower RPMs—critical for homogenizing shear-thinning fluids. The SATELLITE 140, with its tripod configuration and wear-resistant ceramic-coated magnets, maintains stable rotation in abrasive suspensions containing sand, catalyst particles, or precipitates. All stir bar materials comply with USP Class VI and ISO 10993-5 cytotoxicity requirements, supporting GLP/GMP documentation and audit readiness.

Software & Data Management

While the maxMIX operates as a stand-alone analog/digital hybrid instrument without embedded firmware or network connectivity, its operational parameters—including speed setpoint, soft-start duration, and runtime—are fully traceable via manual logbook entry or integration into external LIMS or ELN systems using optional analog voltage output (0–10 V) or digital pulse signal interfaces (available upon request). For facilities requiring 21 CFR Part 11 compliance, the device supports user-defined access controls when paired with validated electronic record systems; its mechanical simplicity and absence of internal data storage eliminate risks associated with electronic signature integrity or audit trail gaps. Routine calibration verification follows ASTM E2500-13 guidelines for equipment qualification, and factory calibration certificates are provided with each unit.

Applications

• Scale-up mixing trials in API synthesis and formulation development
• Homogenization of high-viscosity battery electrolytes and electrode slurries
• Pilot-scale fermentation broth conditioning prior to downstream processing
• Long-duration stability testing of emulsions, gels, and colloidal dispersions
• Preparation of uniform reference standards for rheology and particle size analysis
• Controlled agitation during accelerated aging studies per ICH Q1A(R2)

FAQ

What is the maximum recommended vessel height for reliable coupling with the maxMIX?
For optimal performance, vessel bottom thickness should not exceed 60 mm; total liquid column height is not limiting, but stability requires adequate base support and center-of-gravity alignment.
Can the maxMIX be used with non-magnetic stainless steel reactors?
Yes—provided the reactor base is ≤60 mm thick and the stir bar is selected for high-torque transmission (e.g., SATELLITE 140); magnetic field penetration has been verified in AISI 316L vessels up to 50 mm wall thickness.
Is the unit compatible with cleanroom environments (ISO Class 5–7)?
Its IP64-rated housing, smooth stainless steel surface, and absence of particulate-generating components meet ISO 14644-1 requirements for installation in classified areas when installed outside the clean zone or with appropriate airlock protocols.
Does the 3-year warranty cover stir bar replacement?
The warranty covers the stirrer unit only; stir bars are consumables and available separately under 2mag’s spare parts program with documented lot traceability.
How does the maxMIX support regulatory submissions (e.g., FDA, EMA)?
It provides documented design history, CE marking per Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU, and supports IQ/OQ protocols aligned with Annex 15 and EU GMP Annex 15 guidance.