IKA RO 15 15-Position Digital Magnetic Stirrer (Non-Heated)

Overview

The IKA RO 15 is a precision-engineered, 15-position digital magnetic stirrer designed for high-throughput laboratory workflows requiring consistent, simultaneous agitation of multiple samples. Unlike heated stirrers, the RO 15 operates without temperature control—making it ideal for applications where thermal stability, ambient-temperature mixing, or strict avoidance of heat-induced sample degradation is critical. Its operation relies on permanent magnet coupling between the drive unit and PTFE- or ceramic-coated stir bars placed in vessels, generating controlled rotational motion via rotating magnetic fields beneath the stainless steel work surface. The device complies with IEC/EN 61000 electromagnetic compatibility standards and meets DIN EN 60529 for ingress protection (IP 42), ensuring reliable performance in standard analytical and quality control laboratories.

Key Features

• 15 independently operable stirring positions arranged on a single, compact stainless steel (1.4301) plate—optimized for space-constrained benchtop environments.
• Digital speed control with precise 0–1100 rpm range and ±5% speed deviation across all positions, enabling reproducible mixing intensity across parallel experiments.
• Robust, non-porous stainless steel surface resistant to chemical splashes and corrosion; facilitates rapid decontamination and prevents liquid ingress into internal components.
• Modular design includes a removable polyurethane (PUR) cover that shields unused positions, reduces ambient noise, and enhances operator safety during extended operation.
• Universal dual-voltage input (230 V / 115 V, 50 / 60 Hz) supports global deployment without external transformers; low total power draw (30 W) minimizes energy consumption and heat dissipation.
• Compact footprint (272 × 65 × 552 mm) and lightweight construction (4.7 kg) allow seamless integration into laminar flow hoods, biosafety cabinets, or automated lab benches.

Sample Compatibility & Compliance

The RO 15 accommodates standard laboratory glassware—including beakers, Erlenmeyer flasks, and vials—up to 0.4 L per position, with a cumulative capacity of 6 L when fully loaded. It is compatible with all commercially available magnetic stir bars (e.g., 20–40 mm length, PTFE- or glass-coated) and supports viscous aqueous solutions up to ~500 mPa·s under optimal conditions. The instrument conforms to DIN EN 60529 (IP 42) for protection against solid objects ≥1 mm and vertically falling water droplets. While not certified for use in explosion-proof or sterile-grade cleanrooms, its non-heated architecture and sealed electronics make it suitable for ISO 17025-accredited testing labs performing routine QC/QA procedures under GLP-aligned operational protocols.

Software & Data Management

The RO 15 operates as a standalone analog-digital hybrid instrument with no embedded firmware, network interface, or software dependency. All parameter settings—including speed selection and on/off activation—are managed locally via front-panel push-button controls and an integrated LED display. This architecture eliminates cybersecurity risks, avoids validation overhead associated with electronic records, and ensures uninterrupted operation in regulated environments where FDA 21 CFR Part 11 compliance is not required for manual instruments. For laboratories requiring traceability, users may document operating parameters manually in lab notebooks or integrate the RO 15 into validated SOPs referencing IKA’s Factory Calibration Certificate (available upon request).

Applications

• Parallel sample preparation for titration, pH adjustment, dissolution testing, and buffer equilibration in pharmaceutical QC labs.
• High-throughput reagent homogenization prior to HPLC, GC, or spectrophotometric analysis.
• Cell culture media conditioning and suspension maintenance in microbiology and molecular biology workflows.
• Standardized mixing of calibration standards and reference materials in environmental and food testing laboratories.
• Supporting ASTM D1298 (density of crude oil) and USP (dissolution apparatus verification) auxiliary agitation steps where heating must be excluded.

FAQ

Does the RO 15 support temperature control or heating functionality?

No. The RO 15 is a non-heated magnetic stirrer. Temperature regulation requires a separate hotplate or incubator system.
What is the maximum viscosity this stirrer can handle reliably?

At full speed (1100 rpm), it maintains stable rotation with aqueous solutions up to approximately 500 mPa·s using appropriately sized stir bars (e.g., 30 mm × 8 mm). Performance decreases with increasing viscosity or vessel depth.
Is the stainless steel work surface autoclavable?

No. The entire unit is not autoclavable. Surface disinfection should be performed using ethanol, isopropanol, or diluted sodium hypochlorite solutions compatible with stainless steel 1.4301.
Can the RO 15 be used in a fume hood?

Yes—its low power consumption, absence of heating elements, and IP 42 rating make it suitable for installation inside standard fume hoods, provided airflow does not exceed 0.5 m/s directly over the work surface.
What documentation is supplied with the instrument?

Each unit ships with a Declaration of Conformity (CE), operating instructions in English, and a factory inspection report. Optional IQ/OQ documentation packages are available through IKA-certified service partners.