Titan MPS-3 Multi-Point Magnetic Stirrer
| Brand | Titan |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | MPS-3 |
| Instrument Type | Magnetic Stirrer |
| Maximum Stirring Volume | 2 L |
| Speed Range | 100–2000 rpm |
| Temperature Control Range | Ambient Only |
| Price | ¥2980 (excl. VAT, FOB Shanghai) |
Overview
The Titan MPS-3 Multi-Point Magnetic Stirrer is an engineered benchtop solution for simultaneous, independent agitation of up to three samples in standard laboratory vessels. Designed around a robust permanent magnet array and precision-controlled DC motor system, it operates on the principle of magnetic coupling—where rotating external magnets induce synchronous motion in PTFE-coated stir bars placed within non-magnetic containers. Unlike hotplate stirrers, the MPS-3 provides pure mechanical mixing without integrated heating; its ambient-only operation ensures thermal stability for temperature-sensitive protocols such as enzyme kinetics, polymer dissolution monitoring, or buffer equilibration where exogenous heat introduction must be avoided.
Key Features
- Triple-position stirring platform with individually isolated magnetic drive units—enables concurrent processing of three separate samples without cross-interference or speed crosstalk.
- Wide-speed digital control (100–2000 rpm) with ±5 rpm repeatability across the full range, calibrated using optical tachometry during factory verification.
- Low-profile, chemically resistant ceramic-coated aluminum plate surface—resists corrosion from common solvents, acids, and bases; compatible with glass, polypropylene, and PETG vessels up to 500 mL per position.
- Intuitive rotary encoder interface with LED speed display—supports fine-grained adjustment and memory retention of last-used setting after power cycle.
- Thermally stable chassis design with passive convection cooling—no internal fans or moving parts beyond the drive mechanism, minimizing vibration transmission and acoustic noise (<42 dB at 1 m).
- CE-marked power supply (Input: 100–240 VAC, 50/60 Hz; Output: 24 VDC) with overcurrent and short-circuit protection compliant with IEC 61000-6-3 EMI standards.
Sample Compatibility & Compliance
The MPS-3 accommodates round-bottom flasks, beakers, and graduated cylinders with diameters between 35 mm and 85 mm. Optimal performance is achieved with stir bars 20–40 mm in length and 5–7 mm in diameter (e.g., cross-shaped or oval PTFE-coated bars). It meets general-purpose laboratory safety requirements per EN 61010-1:2010 and is suitable for use in ISO/IEC 17025-accredited testing environments where documented equipment qualification (IQ/OQ) is performed. While not certified for hazardous area use (ATEX/IECEx), its non-sparking magnetic drive architecture makes it appropriate for Class 1, Division 2 solvent-handling workflows when operated within ventilated enclosures.
Software & Data Management
The MPS-3 operates as a stand-alone analog instrument with no embedded firmware, network interface, or data logging capability. This architecture eliminates cybersecurity concerns and simplifies validation in regulated settings—particularly relevant for GLP-compliant stability studies or QC release testing where electronic records are not required. Users maintain full traceability via manual logbooks or LIMS-integrated procedural documentation. For laboratories requiring audit-ready speed verification, Titan provides optional calibration certificates (traceable to NIM, China) upon request, including as-found/as-left speed measurements at three points (300 rpm, 1000 rpm, 1800 rpm) per position.
Applications
- Parallel preparation of calibration standards and reference solutions in analytical chemistry labs.
- Controlled dissolution testing of pharmaceutical excipients under ambient thermal conditions (aligned with USP <711> methodology when used with validated vessel geometry).
- Homogenization of cell culture media prior to sterile filtration—minimizing shear-induced protein denaturation through consistent low-to-moderate shear profiles.
- Multi-vessel pH adjustment and titrant addition in environmental water analysis workflows (e.g., ASTM D1293, EPA 150.1).
- Pre-incubation mixing of immunoassay reagents where temperature uniformity across replicates is critical but active heating would compromise antibody integrity.
FAQ
Does the MPS-3 support external temperature feedback or PID control?
No. The device lacks thermal sensors, heating elements, or closed-loop temperature regulation. It is strictly a magnetic stirring platform.
Can I use the MPS-3 with metal containers or ferromagnetic vessels?
No. Magnetic coupling requires non-ferrous, non-magnetic vessel walls (e.g., borosilicate glass, PP, PC). Stainless steel or iron-based containers will disrupt field alignment and prevent effective bar rotation.
What is the maximum viscosity this unit can handle reliably?
At 2000 rpm, the MPS-3 maintains consistent rotation with aqueous solutions up to ~150 mPa·s (e.g., 2% w/v CMC in water at 25°C). Performance degrades above 300 mPa·s; for high-viscosity applications, a gear-driven overhead stirrer is recommended.
Is the unit supplied with stir bars?
No. Titan recommends pairing the MPS-3 with 30 mm × 6 mm oval PTFE-coated stir bars (Cat. No. SB-306-OV), sold separately to allow user selection based on vessel geometry and process requirements.
How is positional speed consistency verified during manufacturing?
Each unit undergoes individual position calibration using a handheld laser tachometer. Deviation across all three positions must remain within ±3 rpm at nominal setpoints before final QA release.
