IKA topolino Portable Magnetic Stirrer

Overview

The IKA topolino is a compact, benchtop magnetic stirrer engineered for precision, reliability, and ergonomic operation in routine laboratory environments. Designed and manufactured in Staufen, Germany by IKA Werke GmbH & Co. KG—a globally recognized leader in laboratory mixing technology—the topolino employs a brushless DC motor to deliver stable rotational torque without mechanical wear or electromagnetic interference. Its operating principle relies on a rotating magnetic field generated beneath a chemically resistant polypropylene (PP) plate, which couples with ferromagnetic stir bars immersed in samples to induce homogeneous fluid motion. This contactless drive mechanism eliminates contamination risk and ensures consistent mixing performance across low-viscosity aqueous and organic solutions up to 250 mL. The device is optimized for applications requiring moderate shear input and rapid equilibration—such as reagent dissolution, pH adjustment, buffer preparation, and sample homogenization—without integrated heating, making it ideal for temperature-sensitive protocols or use inside cold rooms and environmental chambers.

Key Features

• Brushless DC motor architecture ensuring long service life, silent operation, and zero maintenance—no carbon brushes to replace or commutator wear to monitor.
• Stepless speed control via rotary dial enables fine-tuned adjustment from 300 to 1800 rpm, supporting reproducible mixing across diverse viscosity ranges and vessel geometries.
• High-strength neodymium magnetic coupling system prevents stir bar “jumping” or decoupling even at elevated speeds or under off-center loading conditions.
• Compact footprint (95 × 37 × 115 mm) and lightweight design (0.484 kg) facilitate portability between fume hoods, biosafety cabinets, and shared instrumentation labs.
• Polypropylene (PP) work surface offers excellent chemical resistance to common solvents, acids, and bases, while its smooth, non-porous finish simplifies decontamination and avoids residue retention.
• IP21-rated enclosure provides protection against vertically falling drips and solid objects ≥12.5 mm, meeting basic safety requirements for general-purpose lab use under controlled ambient conditions (5–40 °C, ≤80 % RH).

Sample Compatibility & Compliance

The topolino supports standard glass and plastic vessels—including beakers, Erlenmeyer flasks, and cylindrical sample tubes—with nominal capacities up to 250 mL of water-equivalent media. It accommodates stir bars up to 30 mm in length, enabling effective vortex formation in both narrow and wide containers. While not rated for corrosive vapors or explosive atmospheres, the unit complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and conforms to EN 60529 (IP21) for ingress protection. Its power supply meets universal input specifications (100–240 V AC, 50/60 Hz), eliminating the need for voltage converters in international deployments. As a Class I electrical appliance, it includes double insulation and grounding continuity—fully aligned with GLP-aligned lab infrastructure requirements where traceable, low-risk auxiliary equipment is mandated.

Software & Data Management

The IKA topolino operates as a standalone analog instrument with no embedded microcontroller, firmware, or digital interface. Consequently, it does not generate electronic records, lack data logging capability, and is exempt from FDA 21 CFR Part 11 compliance requirements. This design philosophy prioritizes operational simplicity, electromagnetic compatibility (EMC), and regulatory transparency—making it suitable for ISO/IEC 17025-accredited testing laboratories where manual process documentation (e.g., logbook entries referencing speed setting, duration, and operator ID) satisfies audit expectations for non-critical mixing steps. No software installation, driver dependencies, or cybersecurity validation are required.

Applications

• Routine solution preparation in analytical chemistry workflows, including dilution series, titrant standardization, and mobile phase conditioning for HPLC systems.
• Cell culture media equilibration prior to sterile filtration or pH verification—without thermal drift introduced by hotplate integration.
• Homogenization of low-viscosity biological samples (e.g., serum dilutions, enzyme assay buffers) in clinical diagnostics and quality control labs.
• Supporting ASTM D445 (kinematic viscosity measurement) and ISO 3104 pre-conditioning steps where defined agitation—not heating—is required before capillary viscometer analysis.
• Use in teaching laboratories for foundational experiments in fluid dynamics, mass transfer, and reaction kinetics due to its intuitive control interface and robust build quality.

FAQ

Does the topolino include a heating function?
No. The topolino is a non-heated magnetic stirrer. It delivers only rotational mixing and must be paired with external temperature control (e.g., water bath or chilled block) when thermal regulation is required.
Can it be used with stainless steel stir bars?
Yes—provided the stir bar is magnetically responsive (e.g., PTFE-coated or glass-coated magnets). Pure stainless steel bars are non-magnetic and will not rotate.
Is the device compatible with battery operation?
No. The topolino requires continuous AC mains power (100–240 V) and does not support DC or portable power sources.
What is the recommended maintenance schedule?
No scheduled maintenance is required. Wipe the PP plate with isopropanol after each use; inspect stir bars for coating integrity periodically. Motor lifetime exceeds 20,000 hours under normal load conditions.
Does IKA provide calibration documentation for the topolino?
As an analog, non-measuring device (i.e., no certified speed or torque output), it is not supplied with factory calibration certificates. Speed accuracy is specified as ±5 % of setpoint across the 300–1800 rpm range per IKA technical datasheet 2023-09.