IKA RT 10 10-Position Digital Heating Magnetic Stirrer

Overview

The IKA RT 10 is a precision-engineered, 10-position digital heating magnetic stirrer designed for high-throughput laboratory workflows requiring simultaneous, independent thermal and mechanical control across multiple samples. Built upon IKA’s proprietary multi-coil induction technology, the RT 10 generates uniform, low-noise magnetic fields across all ten stirring positions—eliminating mechanical drive shafts and ensuring wear-free, maintenance-free operation. Unlike single-point stirrers, its distributed coil architecture delivers consistent torque and speed stability—even under variable load conditions or viscosity changes—making it suitable for applications ranging from buffer preparation and reagent synthesis to cell culture media conditioning and dissolution testing. The unit operates on the principle of electromagnetic induction: rotating magnetic fields generated beneath the anodized aluminum heating plate couple with PTFE- or glass-coated stir bars immersed in vessels, enabling contactless agitation without vibration transmission or cross-contamination risk.

Key Features

• 10 independently controlled stirring positions with precise 90 mm center-to-center spacing—optimized for standard rack-mounted tubes, beakers, and flasks.
• Digital speed regulation in 10 rpm increments across a 0–1000 rpm range; zero-speed drift and <0.5% speed deviation per position under load variation.
• Programmable heating plate temperature control (ambient to 120 °C) with LED display and real-time feedback; heating rate approx. 3 K/min under standard conditions.
• Adjustable safety temperature limit (50–150 °C) with automatic cut-off and error code display (e.g., E1 = overtemperature, E2 = sensor fault), compliant with EN 61000-6-2/6-3 EMC requirements.
• Touch-sensitive membrane keypad with intuitive navigation, status indicators, and persistent parameter memory across power cycles.
• Anodized aluminum heating plate (180 × 495 mm) offering superior thermal uniformity (±3 °C across surface at 100 °C) and chemical resistance to common solvents and aqueous solutions.
• Energy-efficient “eco-mode” enables automatic low-power preheating and standby thermal hold—reducing idle power consumption by up to 40% during extended unattended operation.

Sample Compatibility & Compliance

The RT 10 accommodates vessels from 10 mL test tubes to 4 L beakers per position, provided stir bars (25–30 mm length, ≥5 mm diameter) are appropriately selected for fluid viscosity and container geometry. It supports borosilicate glass, polypropylene, and stainless-steel containers rated for temperatures up to 120 °C. The device conforms to DIN EN 60529 (IP40 ingress protection), IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use), and EU RoHS Directive 2011/65/EU. Its design facilitates GLP-compliant documentation when integrated into validated lab environments—audit trails for temperature setpoints, runtime, and error logs can be manually recorded per protocol. While not inherently 21 CFR Part 11 compliant, its deterministic behavior and stable parameter retention support integration into Part 11–governed systems via external electronic lab notebook (ELN) or LIMS linkage.

Software & Data Management

The RT 10 operates as a standalone instrument with no embedded firmware-based data logging or PC connectivity. All operational parameters—including speed, plate temperature, runtime, and safety thresholds—are configured and monitored locally via the front-panel interface. For laboratories requiring traceability, IKA recommends pairing the RT 10 with optional accessories such as the IKA Labworld software suite (via RS232 or USB-to-serial adapter, sold separately) to capture time-stamped setpoint history and event flags. When used in regulated settings, manual logbooks or structured Excel templates aligned with ISO/IEC 17025 documentation practices are commonly employed to record daily verification checks (e.g., speed calibration at 200/600/1000 rpm, plate uniformity mapping).

Applications

• High-volume buffer and media preparation in molecular biology and bioprocessing labs.
• Parallel reaction monitoring in synthetic chemistry, including hydrolysis, esterification, and catalyst screening.
• Dissolution testing of pharmaceutical formulations per USP , where consistent agitation across replicate vessels is critical.
• Cell culture reagent equilibration (e.g., CO₂-independent media, enzyme solutions) requiring gentle, non-shearing mixing below 37 °C.
• Environmental sample digestion protocols (EPA Method 3050B, 3051A) involving acid-based heating and stirring of soil/sediment extracts.
• Quality control workflows in food and beverage labs for homogenization of viscosity standards or calibration fluids.

FAQ

What is the maximum recommended vessel height for reliable stirring with the RT 10?

For optimal magnetic coupling and vortex formation, vessel height should not exceed 150 mm; taller containers may require longer stir bars (up to 30 mm) and reduced speed to maintain stability.
Can the RT 10 be used with corrosive reagents such as concentrated HCl or HF?

The anodized aluminum plate resists mild acids and bases, but direct exposure to hydrofluoric acid or fuming nitric acid is not advised; use PTFE-coated stir bars and secondary containment trays.
Does the RT 10 support bidirectional stirring (clockwise/counter-clockwise)?

No—the RT 10 operates in fixed clockwise rotation only, optimized for laminar flow and reproducible mixing profiles in standard labware.
Is calibration required before first use?

While factory-calibrated, users should verify speed accuracy using a certified tachometer and plate temperature uniformity with a calibrated IR thermometer or PT100 probe prior to GxP-critical applications.
How does the RT 10 manage heat dissipation during prolonged operation?

Its passive aluminum chassis and internal thermal management system—including airflow-optimized housing and duty-cycle-limited heating logic—maintain surface temperatures within safe operating limits even at 120 °C for >8 hours.