Thermo Fisher Scientific Mobil Direct / Mobil 200 / Mobil 600 Heavy-Duty Magnetic Stirrers

Overview

The Thermo Fisher Scientific Mobil Direct, Mobil 200, and Mobil 600 series represent a family of industrial-grade magnetic stirrers engineered for reproducible, high-capacity mixing in demanding laboratory and pilot-scale process environments. These instruments operate on the principle of rotating magnetic fields generated by internal permanent magnets or electromagnetic drives, which couple with PTFE- or glass-coated magnetic stir bars placed inside vessels. Unlike conventional benchtop stirrers, the Mobil platform is designed for continuous operation under variable thermal and mechanical loads, supporting viscous, abrasive, or temperature-sensitive media across pharmaceutical, chemical synthesis, bioprocessing, and environmental testing applications. Each model is constructed with electropolished stainless-steel housings rated to IP64/IP65—enabling safe operation in wet or splash-prone areas and permitting surface cleaning with flowing water without risk of ingress-related failure.

Key Features

• Robust stainless-steel chassis with corrosion-resistant finish, compliant with ISO 9001-certified manufacturing processes in Germany
• Instant stop functionality: motor deceleration completes within ≤3 seconds upon command or emergency interruption, minimizing vortex collapse and sample disturbance
• Three-tiered capacity architecture: Mobil Direct (self-contained controller, 150 L max), Mobil 200 (requires Telemodul 40 M external controller, 200 L max), and Mobil 600 (requires Telemodul 80 M, 600 L max)
• Wide operational speed range (100–1000 rpm) with closed-loop feedback control ensuring ±2 rpm stability under load variations
• Extended thermal operating envelope: −10 °C to +40 °C for Mobil Direct (95% RH); −10 °C to +56 °C for Mobil 200/600 (100% RH), enabling integration into cold-room or heated jacketed reactor workflows
• Integrated thermal monitoring with overtemperature cut-off and fault logging—supports GLP-compliant documentation when paired with compatible data acquisition systems

Sample Compatibility & Compliance

The Mobil stirrers accommodate standard laboratory glassware (e.g., beakers, flasks, jacketed reactors) as well as custom stainless-steel or Hastelloy vessels up to 600 L volume. Stir bar selection (size, coating, geometry) must be optimized per viscosity, density, and chemical compatibility—Thermo Fisher provides application guidance per ASTM D1209 (color measurement), ISO 3219 (rheological standard fluids), and USP (sterile compounding). All models comply with IEC 61000-6-3 (EMC emissions), IEC 61000-6-2 (immunity), and CE marking requirements. For regulated environments, the Telemodul controllers support audit trail generation and user access levels aligned with FDA 21 CFR Part 11 principles when configured with validated software interfaces.

Software & Data Management

While the Mobil Direct operates autonomously via its embedded microcontroller, the Mobil 200 and Mobil 600 rely on the Telemodul 40 M or 80 M external controllers—both offering analog (0–10 V) and digital (RS485 Modbus RTU) communication protocols. These controllers integrate seamlessly into LabArchives, DeltaV, or Siemens Desigo CCMS platforms for centralized monitoring. Real-time parameters—including speed setpoint, actual rpm, surface temperature, runtime, and fault codes—are timestamped and exportable in CSV or XML formats. Firmware updates are performed via USB or Ethernet; version history and calibration logs are retained locally for traceability during internal quality audits.

Applications

• Large-volume buffer preparation and pH adjustment in upstream bioprocessing (e.g., cell culture media conditioning at 200–600 L scale)
• Solubilization and homogenization of polymer solutions prior to rheological characterization or filtration validation
• Controlled dissolution testing of extended-release formulations under USP Apparatus 2 conditions
• Continuous mixing in environmental water treatment simulations (e.g., coagulant dispersion in turbid water matrices)
• Inert-atmosphere reactions in glovebox-integrated setups, leveraging IP65-rated housing for reliable operation under nitrogen or argon

FAQ

What is the difference between Mobil Direct, Mobil 200, and Mobil 600 in terms of control architecture?

The Mobil Direct integrates a fully embedded controller and requires no external hardware. Mobil 200 and Mobil 600 necessitate dedicated Telemodul 40 M or 80 M controllers, respectively, which provide advanced parameter logging, multi-device synchronization, and remote configuration capabilities.
Can these stirrers be used with non-magnetic vessels such as aluminum or plastic reactors?

No—magnetic coupling requires ferromagnetic or magnetically permeable vessel bases. For non-magnetic vessels, mechanical overhead stirring or induction-heated stir plates with compatible base materials must be considered.
Is calibration required before first use or after routine maintenance?

Speed calibration is factory-performed and traceable to German national standards (PTB). Users may verify performance using an optical tachometer; full recalibration is recommended every 12 months or after impact events affecting drive alignment.
Do the Mobil series stirrers support programmable ramp profiles (e.g., gradual acceleration/deceleration)?

Yes—Telemodul controllers support multi-step speed ramps, dwell times, and conditional triggers (e.g., “hold at 450 rpm until temperature reaches 37 °C”), configurable via the Telemodul PC software suite.
Are replacement stir bars and controller modules available through Thermo Fisher’s global service network?

All consumables—including PTFE-coated stir bars (50–120 mm), glass-coated variants, and Telemodul spare boards—are stocked in regional distribution centers and supported by 24-month warranty coverage under Thermo Fisher’s ServicePlus program.