DLAB MS-PA LED Digital Display Magnetic Stirrer
| Brand | DLAB |
|---|---|
| Origin | Beijing, China |
| Model | MS-PA LED |
| Stirrer Type | Magnetic Stirrer |
| Max. Stirring Volume (Water) | 3 L |
| Speed Range | 200–1500 rpm |
| Temperature Control Range | 5–40 °C |
| Display | LED |
| Motor Type | Brushless DC |
| Input Power | 5 W |
| Output Power | 3 W |
| Rated Power | 15 W |
| Working Plate Diameter | Ø135 mm |
| Plate Material | Nylon + GF |
| IP Rating | IP42 |
| Safety Certifications | CE, cTUVus, FCC, DIN/EN 60529 |
| Dimensions (L×W×H) | 150 × 260 × 80 mm |
| Weight | 1.8 kg |
| Ambient Operating Temp. | 5–40 °C |
| Relative Humidity Limit | ≤80% RH |
| Max. Stir Bar Length | 50 mm |
| Power Supply | 100–120 V / 200–240 V, 50/60 Hz |
Overview
The DLAB MS-PA LED Digital Display Magnetic Stirrer is a compact, precision-engineered laboratory stirrer designed for consistent, low-noise mixing of aqueous and low-viscosity solutions in standard benchtop environments. It operates on the principle of magnetic coupling: a rotating permanent magnet beneath the chemically resistant nylon-glass fiber (Nylon+GF) plate induces synchronous rotation of a magnetic stir bar immersed in the sample vessel. Unlike hotplate stirrers, the MS-PA LED model provides speed control only—without integrated heating—making it ideal for temperature-sensitive applications where external thermal regulation (e.g., water baths or environmental chambers) is employed. Its brushless DC motor ensures high torque stability across the full 200–1500 rpm range, minimal electromagnetic interference, and extended service life with zero brush wear or carbon dust generation. The device is engineered for reproducibility in routine QC workflows, teaching labs, and preparatory chemistry tasks requiring reliable, hands-free agitation of volumes up to 3 L (water-equivalent).
Key Features
- Digital LED display showing real-time rotational speed with ±10 rpm typical repeatability under load
- Nylon+GF composite plate (Ø135 mm) offering excellent chemical resistance, mechanical rigidity, and low thermal conductivity
- Brushless DC motor delivering smooth acceleration, low acoustic emission (<45 dB(A)), and consistent torque output even at low speeds
- IP42-rated enclosure providing protection against solid objects >1 mm and vertically falling water droplets—suitable for general lab use
- Universal power input (100–120 V / 200–240 V, 50/60 Hz) enabling global deployment without voltage converters
- Compliance with international safety standards: CE, cTUVus (UL 61010-1), FCC Class B, and DIN/EN 60529 for ingress protection
- Low power consumption architecture: 15 W total rated power, with 3 W mechanical output optimized for energy efficiency
Sample Compatibility & Compliance
The MS-PA LED supports glass, plastic, and stainless-steel vessels with flat, non-magnetic bases. It accommodates stir bars up to 50 mm in length and is validated for aqueous solutions, buffers, dilute acids/bases, and organic solvents compatible with Nylon+GF surfaces (e.g., ethanol, acetone, chloroform). It is not recommended for highly viscous media (>1000 mPa·s), abrasive suspensions, or sealed pressure vessels. From a regulatory standpoint, the unit meets essential requirements of IEC 61010-1 for electrical safety in laboratory equipment and aligns with Good Laboratory Practice (GLP) infrastructure expectations for traceable, stable agitation. While it does not include audit-trail-capable firmware, its passive operation and mechanical simplicity support ISO/IEC 17025-compliant method validation when used within documented SOPs.
Software & Data Management
The MS-PA LED is a standalone analog-digital hybrid instrument with no embedded microprocessor, network interface, or data logging capability. Speed is adjusted via a calibrated rotary encoder; values are displayed on a fixed-segment LED screen with no user-configurable units, alarms, or memory functions. This design prioritizes operational robustness, electromagnetic compatibility (EMC), and long-term calibration stability—critical for regulated environments where software validation overhead must be minimized. No drivers, firmware updates, or PC connectivity are required. All settings are manually set and visually verified, supporting 21 CFR Part 11-aligned manual recordkeeping when paired with lab notebooks or LIMS-integrated observation logs.
Applications
- Buffer and reagent preparation in molecular biology and clinical diagnostics labs
- Homogenization of cell culture media prior to sterilization or dispensing
- Standardized dissolution testing of pharmaceutical tablets (when coupled with USP Apparatus II-compatible vessels)
- Electrolyte equilibration in electrochemical cell setups
- Pre-analytical sample conditioning for HPLC, IC, and spectrophotometric assays
- Undergraduate and graduate teaching labs requiring durable, intuitive stirring platforms
FAQ
Does the MS-PA LED include heating functionality?
No. It is a speed-controlled magnetic stirrer only. Temperature regulation must be achieved externally using water baths, chillers, or climate-controlled enclosures.
What is the maximum recommended viscosity for reliable stirring?
For optimal performance and motor longevity, use with solutions having dynamic viscosity below 500 mPa·s at operating temperature. Higher viscosities may cause speed drift or incomplete mixing.
Is the stirrer compatible with glass-bottom petri dishes or microplates?
Yes, provided the vessel base is flat, non-ferromagnetic, and ≤135 mm in diameter. For microplate agitation, a dedicated small-diameter stir bar (e.g., 10–20 mm) is recommended.
Can it be used in cold rooms or incubators?
It is rated for ambient operation between 5–40 °C and ≤80% RH. Prolonged use below 10 °C may affect LED response time and encoder tactile feedback but does not compromise core functionality.
How often does the unit require calibration or maintenance?
No periodic calibration is required. Routine cleaning of the plate surface and visual inspection of the stir bar for chipping or demagnetization every 6 months is sufficient for sustained accuracy.
