JEIO TECH MS Series Magnetic Stirrer
| Brand | JEIO TECH |
|---|---|
| Origin | South Korea |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | MS Series |
| Price Range | USD 140–420 |
| Instrument Type | Magnetic Stirrer |
| Maximum Stirring Volume | 5 L |
| Speed Range | 150–2,500 rpm |
| Temperature Control | Ambient Only |
Overview
The JEIO TECH MS Series Magnetic Stirrer is a precision-engineered laboratory device designed for reliable, low-maintenance agitation of liquid samples in beakers, flasks, and other standard glassware. Operating on the principle of magnetic coupling—where a rotating permanent magnet beneath the top plate induces synchronous rotation of a magnetic stir bar immersed in the sample—the MS Series delivers consistent torque transfer without mechanical contact, eliminating wear-prone shafts or seals. Engineered for routine benchtop use in QC labs, academic teaching environments, and R&D settings, this series prioritizes operational safety, ergonomic accessibility, and long-term stability under continuous duty cycles. Its brushless DC motor ensures spark-free operation, reduced electromagnetic interference, and acoustic noise below 45 dB(A) at maximum speed—critical for shared lab spaces and vibration-sensitive workflows.
Key Features
- Brushless DC motor with thermal shutdown and overcurrent protection—compliant with IEC 61000-6-3 for electromagnetic compatibility.
- Ergonomic, lightweight housing (0.6–1.1 kg) constructed from chemical-resistant polypropylene (PP), enabling easy repositioning and cleaning.
- Large, textured silicone-coated top plate (diameters from 115 mm to 220 mm) providing enhanced grip and thermal insulation; available in white, black, or yellow variants per model variant.
- Non-slip rubber feet ensure stable placement on stainless steel, laminate, or epoxy resin work surfaces—even during high-RPM operation.
- IP42-rated enclosure (per DIN EN 60529) protects internal electronics against splashes and particulate ingress—suitable for wet-lab environments where accidental spills are common.
- RoHS-compliant construction (excluding MS-T models with integrated temperature sensors); CE-marked and certified to EN 61010-1:2010 for laboratory electrical safety.
Sample Compatibility & Compliance
The MS Series accommodates standard laboratory vessels up to 5 L capacity, including borosilicate glass beakers (up to Ø150 mm base diameter), Erlenmeyer flasks, and cylindrical reaction tubes. Compatible stir bars range from 8×30 mm to 10×50 mm (0.31×1.18 in to 0.39×1.97 in), supporting viscous solutions up to 1,000 mPa·s (e.g., glycerol/water mixtures). All models meet ISO/IEC 17025 general requirements for testing and calibration laboratories regarding equipment suitability and traceable performance verification. While not equipped with active heating or cooling, ambient-only operation aligns with ASTM E2917-22 guidelines for non-temperature-controlled mixing validation protocols.
Software & Data Management
As a stand-alone analog-controlled instrument, the MS Series does not incorporate digital connectivity, firmware, or data logging capabilities. Speed is adjusted via intuitive rotary encoder or push-button interface with LED indication (on select MS-B variants); no software installation, driver dependencies, or network configuration is required. This architecture eliminates cybersecurity vulnerabilities and ensures uninterrupted functionality across legacy and modern IT infrastructures—particularly advantageous in GLP-regulated environments where audit trails for electronic records must be rigorously justified. Calibration verification may be performed using NIST-traceable tachometers per ISO/IEC 17025 Clause 6.5.2.
Applications
- Homogenization of buffer solutions, cell culture media, and reagent dilutions prior to pH adjustment or filtration.
- Facilitating dissolution kinetics studies in pharmaceutical development (e.g., USP dissolution apparatus auxiliary mixing).
- Supporting titration workflows by maintaining uniform analyte dispersion during endpoint detection.
- Preparatory mixing for ICP-MS, HPLC, and GC sample introduction systems where particulate suspension stability is critical.
- Teaching laboratories requiring robust, low-failure-rate equipment for undergraduate chemistry and biology curricula.
FAQ
Does the MS Series support external temperature monitoring or feedback control?
No. The MS Series operates at ambient temperature only and lacks integrated temperature sensors, Peltier elements, or PID controllers. For thermostatic stirring, consider JEIO TECH’s MS-H series hotplate stirrers.
What is the maximum viscosity the MS Series can effectively stir?
Under standard conditions (25°C, 500 mL water, 8×30 mm stir bar), consistent rotation is maintained up to ~1,000 mPa·s. Performance beyond this depends on vessel geometry, stir bar alignment, and magnetic coupling distance.
Are replacement stir bars and silicone top plates available as spare parts?
Yes. JEIO TECH supplies OEM-compatible stir bars (catalog #SB-0830, SB-1050) and color-matched silicone top plate kits (part #TP-MSB-WHT, TP-MSB-BLK) with documented dimensional tolerances and magnetic saturation specifications.
Is the power supply compatible with global voltage standards?
Yes. All units include an auto-ranging AC adapter (100–240 V, 50/60 Hz), certified to UL 61010-1 and KC 61010-1 for safe operation in North America, EU, South Korea, and ASEAN markets.
Can the MS Series be used inside anaerobic chambers or gloveboxes?
Yes—provided the chamber atmosphere is non-corrosive (e.g., N₂ or CO₂/N₂ mixtures) and ambient temperature remains within 15–35°C. The IP42 rating and absence of venting ports prevent gas infiltration into the motor housing.
