IKA TOPOLINO MOBIL Portable Magnetic Stirrer

Overview

The IKA TOPOLINO MOBIL is a compact, battery-powered portable magnetic stirrer engineered for precision mixing in field laboratories, teaching environments, quality control stations, and mobile analytical workflows. Unlike conventional benchtop stirrers requiring fixed power outlets, the TOPOLINO MOBIL integrates a brushless DC motor and intelligent speed control electronics to deliver stable, pulse-free rotation across its full 300–1800 rpm range—without carbon brushes, mechanical wear, or electromagnetic interference. Its operation relies on classical magnetic coupling: a rotating permanent magnet beneath the polypropylene plate induces synchronous rotation in ferromagnetic stir bars immersed in vessels up to 250 mL (water-equivalent). Designed for reproducibility under variable ambient conditions, the device complies with DIN EN 60529 (IP20) for protection against solid objects ≥12.5 mm and non-hazardous indoor use. Its lightweight (0.747 kg), low-profile geometry (140 × 42 × 140 mm), and dual-power architecture make it uniquely suited for decentralized lab operations where portability, autonomy, and electrical safety are critical.

Key Features

• Brushless DC motor ensuring maintenance-free operation, extended service life, and consistent torque delivery across the entire speed range
• Three flexible power configurations: standalone operation using rechargeable AA batteries (9 V DC), continuous AC operation via universal-input adapter (100–240 V, 50/60 Hz), or hybrid mode with simultaneous battery + adapter connection
• True analog speed control with fine-tuned resolution—no digital stepping artifacts—enabling smooth ramping and stable low-speed agitation (e.g., for viscous or shear-sensitive samples)
• Polypropylene (PP) work surface (Ø 80 mm) offering chemical resistance to common solvents, acids, and bases; non-conductive and non-magnetic to prevent eddy current losses
• Integrated battery management system supporting 8–12 hours of continuous operation per charge and full recharge in ≤3 hours
• Robust mechanical design certified to IP20 ingress protection, suitable for standard laboratory environments with ambient temperatures from 5–40 °C and relative humidity ≤80 % RH

Sample Compatibility & Compliance

The TOPOLINO MOBIL accommodates standard cylindrical glass or plastic vessels (e.g., beakers, test tubes, vials) up to 250 mL volume when used with stir bars ≤30 mm in length. Its magnetic drive system is optimized for aqueous and low-to-medium viscosity solutions (e.g., buffers, saline, dilute polymer solutions). It is not intended for high-viscosity media (>1000 mPa·s), sealed/vacuum systems, or temperature-controlled applications (no heating or cooling function). The device conforms to IEC/EN 61010-1 for electrical safety in laboratory equipment and meets EMC requirements per EN 61326-1. While not intrinsically safe for hazardous areas, its low-voltage DC operation and absence of exposed conductors reduce ignition risk in general-purpose labs. Documentation supports GLP-compliant recordkeeping when integrated into validated workflows.

Software & Data Management

The TOPOLINO MOBIL operates as a stand-alone instrument without embedded firmware, network interface, or data logging capability. All operational parameters—including speed setting and power source status—are indicated via tactile feedback and visual cues (e.g., LED indicators). For regulated environments requiring audit trails, users may document settings manually or integrate the unit into broader electronic lab notebook (ELN) or LIMS platforms via procedural SOPs. No software drivers, USB connectivity, or FDA 21 CFR Part 11 compliance features are included—consistent with its role as a basic, non-regulated mixing tool aligned with ISO/IEC 17025 clause 6.4.2 (equipment suitability verification).

Applications

• Field-based environmental sampling: homogenizing water, soil leachates, or biological suspensions prior to filtration or analysis
• Academic teaching labs: demonstrating stoichiometric reactions, titration preparations, or dissolution kinetics without fixed infrastructure
• Pharmaceutical QC checkpoints: reconstituting reference standards or preparing dilution series in cleanroom-adjacent staging areas
• Biotechnology support: gentle resuspension of lyophilized reagents, cell pellet washing, or buffer equilibration during instrument setup
• Maintenance-free operation in gloveboxes or fume hoods where cable routing poses contamination or ergonomic challenges

FAQ

Can the TOPOLINO MOBIL be used with heated vessels or temperature-controlled plates?
No. It lacks integrated heating elements or thermal regulation and is not designed for use with hot plates or external heating mantles.
What stir bar sizes are recommended for optimal performance?
Stir bars up to 30 mm in length and 8 mm in diameter provide maximum coupling efficiency; shorter bars (<15 mm) are advised for volumes <50 mL to avoid vortex instability.
Is the device compatible with corrosive solvents such as concentrated HCl or acetone?
Yes—the PP work surface and sealed motor housing resist short-term exposure to common laboratory solvents; prolonged contact with strong oxidizers (e.g., chlorinated solvents) is not recommended.
Does the unit support calibration or traceable speed verification?
Speed accuracy is factory-verified per IKA internal QA protocols; users may validate rotational output using an optical tachometer or stroboscope per ISO 8662-2 guidelines.
Can the battery pack be replaced or upgraded by the end user?
The device uses standard AA-size rechargeable NiMH or Li-ion cells; replacement is permitted but must maintain 9 V nominal output and polarity alignment per IKA service manual instructions.