Titan MS-2L Magnetic Stirrer

Overview

The Titan MS-2L Magnetic Stirrer is a compact, benchtop laboratory instrument engineered for precision mixing of low-to-medium viscosity liquids in non-heated applications. It operates on the principle of magnetic coupling: a rotating permanent magnet or electromagnetic drive beneath the work surface induces synchronous rotation of a PTFE- or glass-coated stir bar immersed in the sample vessel. This contactless torque transmission eliminates mechanical seals and shaft wear—ensuring long-term reliability, ease of cleaning, and contamination-free operation. Designed for routine use in chemistry, biology, quality control, and teaching laboratories, the MS-2L delivers stable rotational output across its full speed range without significant load-dependent drift, making it suitable for dissolution testing, reagent homogenization, buffer preparation, and pre-analytical sample conditioning where thermal input is neither required nor desired.

Key Features

• Wide-speed digital control (100–2000 rpm) with ±5 rpm speed stability under constant load conditions
• Robust ceramic-coated aluminum housing providing chemical resistance and thermal dissipation
• Low-profile platform (Ø130 mm) optimized for compatibility with standard beakers, flasks, and vials up to 2 L capacity
• Digital LED display showing real-time speed setting and operational status
• Soft-start function minimizing initial vortex formation and splashing during startup
• Overload protection circuitry automatically disengages drive motor if stir bar stalls or viscosity exceeds design limits
• Non-slip silicone base pad ensures positional stability on vibration-sensitive benches or laminar flow hoods

Sample Compatibility & Compliance

The MS-2L supports vessels made of borosilicate glass, polypropylene, PET, and other non-magnetic, chemically inert materials. It accommodates round-bottom flasks (up to 2 L), tall-form beakers, and multi-well plates when used with appropriately sized stir bars (recommended bar length: 30–40 mm for optimal torque transfer). The device complies with IEC 61010-1:2010 safety standards for electrical equipment for measurement, control, and laboratory use. While not equipped with temperature regulation, its ambient-only operation aligns with protocols requiring isothermal mixing—such as enzymatic assays sensitive to thermal denaturation or pH-sensitive titrations where heater-induced CO₂ outgassing must be avoided. No regulatory certification for GLP/GMP environments is claimed; however, the unit’s consistent performance and absence of moving parts external to the platform support audit-ready documentation practices when integrated into validated workflows.

Software & Data Management

The MS-2L operates as a standalone analog-digital hybrid instrument with no embedded microprocessor-based data logging or PC connectivity. All operational parameters are set manually via front-panel controls and retained only during active power supply. For laboratories requiring traceable mixing records—particularly those adhering to ISO/IEC 17025 or FDA 21 CFR Part 11 requirements—the device may be deployed alongside external time-stamped video monitoring or integrated into programmable lab automation systems via optional 0–5 V analog speed control interface (available upon request for OEM integration). Routine maintenance logs, calibration checks (performed using certified tachometer verification), and usage records should be maintained per institutional SOPs to ensure continuity of method integrity.

Applications

• Homogenization of aqueous and organic solutions prior to HPLC or GC sample injection
• Mixing of cell culture media and dilution buffers without introducing shear stress or heat artifacts
• Preparation of standard solutions for spectrophotometric calibration (e.g., UV-Vis, AAS)
• Stirring during titration endpoints where temperature-induced reaction kinetics must remain unaltered
• Supporting gravimetric analysis workflows involving dissolution of reference standards in volumetric flasks
• Use in undergraduate teaching labs for demonstrating fluid dynamics, viscosity effects, and magnetic field interactions

FAQ

Does the MS-2L include a heating function?
No. The MS-2L is a non-heated magnetic stirrer. It maintains ambient temperature operation only.
What stir bar size is recommended for maximum efficiency at 2 L volume?
A 35 mm × 8 mm elliptical or cylindrical PTFE-coated stir bar is optimal for 2 L beakers or Erlenmeyer flasks.
Can the MS-2L be used with metal containers?
No. Ferromagnetic or conductive vessels will interfere with magnetic coupling and impair performance or damage the drive mechanism.
Is speed calibration traceable to national standards?
Yes—speed accuracy can be verified using an NIST-traceable handheld tachometer; annual verification is recommended for regulated environments.
What is the expected service life under continuous 8-hour daily operation?
With proper maintenance and avoidance of overloading, the brushless DC motor and drive electronics are rated for ≥20,000 hours of operational duty.