DLAB MS7-Pro 7-inch Square LCD Digital Magnetic Stirrer
| Brand | DLAB |
|---|---|
| Origin | Beijing, China |
| Model | MS7-Pro |
| Stirring Capacity | 20 L (H₂O) |
| Plate Dimensions | 184 × 184 mm (7″ square) |
| Plate Material | Glass-Ceramic |
| Motor Type | Brushless DC Motor |
| Input Power | 18 W |
| Output Power | 10 W |
| Rated Power | 50 W |
| Voltage | 200–240 VAC |
| Frequency | 50/60 Hz |
| Speed Range | 100–1500 rpm |
| Speed Display | LCD (Resolution: ±1 rpm) |
| Max Stir Bar Length | 80 mm |
| Protection Rating | IP21 |
| Dimensions (W×D×H) | 215 × 360 × 112 mm |
| Weight | 5.3 kg |
| Operating Temperature | 5–40 °C |
| Relative Humidity | ≤80 % RH |
Overview
The DLAB MS7-Pro is a precision-engineered 7-inch square digital magnetic stirrer designed for consistent, reliable mixing in research laboratories, quality control environments, and routine analytical workflows. Utilizing a brushless DC motor architecture, the MS7-Pro delivers high torque stability across its full speed range (100–1500 rpm), eliminating mechanical wear and ensuring long-term rotational accuracy without maintenance intervention. Its glass-ceramic top plate—chemically inert, thermally stable, and highly resistant to scratches and corrosion—provides an optimal surface for both aqueous and aggressive solvent-based applications. The device operates on standard 200–240 VAC mains power with dual-frequency compatibility (50/60 Hz), making it suitable for international deployment under regulated laboratory conditions. Engineered for reproducibility and operator safety, the MS7-Pro conforms to DIN EN 60529 (IP21) ingress protection standards, limiting exposure to solid objects larger than 12.5 mm while offering basic protection against vertically falling drops of water.
Key Features
- 7-inch (184 × 184 mm) square glass-ceramic heating-free plate with uniform thermal mass distribution and high chemical resistance
- LCD display showing both setpoint and real-time rotational speed with ±1 rpm resolution for precise process validation
- Brushless DC motor delivering stable torque output up to 20 L (H₂O) capacity, supporting stir bars up to 80 mm in length
- No integrated heater—designed exclusively for ambient-temperature magnetic agitation to minimize thermal drift in temperature-sensitive protocols
- Compact footprint (215 × 360 × 112 mm) and lightweight construction (5.3 kg) enabling flexible benchtop integration in ISO/IEC 17025-accredited labs
- Compliant with IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) standards for electromagnetic compatibility in shared instrumentation environments
Sample Compatibility & Compliance
The MS7-Pro accommodates a wide range of sample vessels—including borosilicate glass beakers (50 mL to 20 L), polypropylene carboys, and stainless-steel reactors—provided they are placed centrally over the magnetic field zone. Its open-loop speed control system maintains nominal rotational fidelity within ±2% deviation under constant load, validated per ASTM D2196 for viscometric mixing consistency. While not certified for hazardous area use (e.g., ATEX or IECEx), the unit meets general-purpose laboratory safety requirements under UL 61010-1 and CSA C22.2 No. 61010-1. It supports GLP-compliant documentation when paired with external logging systems, though native audit trail functionality is not embedded due to its non-regulated standalone operation mode.
Software & Data Management
As a stand-alone analog-digital hybrid instrument, the MS7-Pro does not feature USB, Bluetooth, or Ethernet connectivity. All operational parameters—including speed setpoint and real-time RPM—are managed locally via front-panel membrane buttons and visualized on the monochrome LCD interface. For laboratories requiring electronic recordkeeping, integration with third-party data acquisition platforms (e.g., LabVIEW, MATLAB, or custom SCADA interfaces) is achievable through optional analog voltage output modules (0–10 V DC proportional to speed), sold separately. No firmware updates or cloud synchronization are supported; device calibration remains fixed at factory level and requires no user recalibration during service life.
Applications
- Homogenization of buffer solutions, cell culture media, and reagent stock preparations in molecular biology and biopharma QC labs
- Pre-analytical sample conditioning prior to HPLC, ICP-MS, or titration workflows where thermal neutrality is critical
- Continuous agitation during dissolution testing (USP ) when used in conjunction with temperature-controlled water baths
- Stirring of viscous polymer dispersions and nanoparticle suspensions in materials science R&D, leveraging consistent low-end torque delivery
- Supporting ISO 8573-1 compressed air purity testing by maintaining uniform particle suspension in sampling flasks
FAQ
Does the MS7-Pro include a built-in heater?
No. The MS7-Pro is a non-heated magnetic stirrer. It is optimized for ambient-temperature mixing only.
Can the MS7-Pro be used with conductive or metallic containers?
No. Magnetic coupling requires non-ferromagnetic, non-conductive vessel walls (e.g., glass, PP, PTFE). Stainless steel or aluminum containers will attenuate the magnetic field and impair performance.
Is speed calibration traceable to NIST or other national standards?
The unit is factory-calibrated using reference tachometry; however, no NIST-traceable certificate is supplied as standard. Optional third-party calibration services are available upon request.
What is the maximum continuous duty cycle?
Rated for indefinite operation at any speed setting within the 100–1500 rpm range, provided ambient temperature remains between 5–40 °C and relative humidity does not exceed 80 % RH.
Are replacement stir bars compatible with this model?
Yes—standard PTFE-coated or PTFE+glass-coated stir bars up to 80 mm in length and ≤10 mm in diameter are fully compatible.
