IKA TWISTER SET 3 Multi-Position Magnetic Stirrer

Overview

The IKA TWISTER SET 3 is a modular, multi-position magnetic stirrer engineered for precision, reproducibility, and operational flexibility in modern analytical and quality control laboratories. Unlike conventional single-drive stirrers, the TWISTER SET 3 integrates three independently controllable magnetic drive units within a compact, glass-top platform—each delivering up to 3000 rpm and capable of homogenizing aqueous solutions up to 5 L or low-volume samples as small as 5 mL. Its core operation relies on high-efficiency brushless DC motors coupled with rare-earth magnet arrays, generating consistent torque across its full speed range while maintaining thermal stability and minimal electromagnetic interference. The system’s design adheres to fundamental principles of fluid dynamics in laminar and transitional flow regimes, enabling reliable mixing of Newtonian and moderately non-Newtonian fluids (up to ~500 mPa·s). Its IP66-rated enclosure ensures integrity against dust ingress and high-pressure water exposure—making it suitable for use inside incubators, under fume hoods, or in wet-lab environments where frequent decontamination is required.

Key Features

• Three independent stirring positions with synchronized or individual control via intuitive touch interface
• 360° chemically resistant LED glass display—provides real-time visual feedback of speed, power demand, viscosity trend (% change), and operational status without alphanumeric text
• Reversible rotation mode with programmable interval timing to disrupt boundary layers and enhance homogeneity in viscous or particulate-laden suspensions
• Vessel recognition technology enables automatic start/stop upon placement or removal of compatible glassware—reducing manual intervention and improving protocol consistency
• Modular architecture supports expansion from 3 to up to 30 stirring positions using optional TWISTER extension units and an IKA HUB controller
• Master-slave synchronization allows coordinated operation across multiple TWISTER units—critical for parallel assay preparation or standardized QC workflows
• Optional viscosity trend monitoring provides semi-quantitative assessment of real-time rheological changes during reactions (e.g., polymerization, precipitation, or enzymatic hydrolysis)
• Programmable timer (6 s–1 min), intermittent mode, and graphical display functions support method development and SOP documentation

Sample Compatibility & Compliance

The TWISTER SET 3 accommodates standard laboratory vessels—including beakers (25–1000 mL), Erlenmeyer flasks, and custom microtiter-compatible plates—when used with the optional TW.IX multi-well adapter (9-position, 8–60 mL range) or TW.VX orbital shaker module. Stir bar compatibility spans 10–30 mm lengths, supporting PTFE-, PTFE/samarium-, and ceramic-coated designs for chemical resistance and thermal stability. The device complies with DIN EN 60529 (IP66), IEC 61000-6-3 (EMC emission limits), and IEC 61000-6-2 (immunity). While not intrinsically certified for hazardous locations, its sealed construction and absence of exposed electronics meet general safety requirements for ISO/IEC 17025-accredited testing labs. Optional interfaces (RS232, USB, Bluetooth, Wi-Fi) enable integration into LIMS or ELN systems compliant with FDA 21 CFR Part 11 when paired with validated software and audit-trail-enabled firmware.

Software & Data Management

Although the base unit operates autonomously via front-panel controls, optional digital connectivity transforms the TWISTER SET 3 into a networked endpoint within automated lab infrastructures. RS232 and USB interfaces support ASCII-based command protocols for remote parameter setting, real-time speed logging, and event-triggered data capture. Bluetooth and Wi-Fi variants allow secure pairing with IKA Labworld software or third-party platforms supporting MQTT or RESTful APIs. When deployed with the HUB controller, users can define up to six independent stirring groups, assign unique profiles (speed ramps, reversal intervals, dwell times), and export timestamped operational logs—including detected vessel presence, viscosity trend deviations, and motor load fluctuations. All data exports are CSV-formatted and compatible with statistical process control (SPC) tools used in GMP/GLP environments.

Applications

The TWISTER SET 3 serves critical roles across pharmaceutical development (buffer preparation, dissolution testing pre-mixing), biotechnology (cell culture media conditioning, reagent equilibration), environmental analysis (extraction homogenization, digestate mixing), and academic research (kinetic studies requiring precise agitation control). Its reversible agitation improves dispersion efficiency in nanoparticle synthesis, colloidal stabilization experiments, and heterogeneous catalysis setups. In regulated QC labs, the device supports USP dissolution apparatus auxiliary mixing, ASTM D445 viscosity sample homogenization, and ISO 8573-3 compressed air contaminant suspension protocols. The ability to maintain stable operation at 40°C enables direct integration into temperature-controlled workflows—such as accelerated stability studies or enzyme activity assays requiring simultaneous thermal and mechanical input.

FAQ

Can the TWISTER SET 3 operate inside a CO₂ incubator?

Yes—its IP66 rating and absence of ventilation grilles permit safe operation in humidified, temperature-stabilized enclosures up to 40°C.
Is vessel recognition compatible with all glassware types?

Vessel detection relies on capacitive sensing optimized for borosilicate glass and quartz; performance may vary with thick-walled or metallized containers.
What is the maximum viscosity the system can handle reliably?

Under standard conditions (25°C, 500 mL water, 20 mm stir bar), consistent operation is verified up to ~500 mPa·s; higher viscosities require empirical validation per application.
Does the optional HUB controller support firmware updates?

Yes—firmware updates are delivered via USB and preserve calibration parameters and user-defined group configurations.
Are calibration certificates available for traceable speed verification?

IKA offers optional factory calibration reports (traceable to PTB standards) covering speed accuracy, timer deviation, and temperature rise under load.