DLAB DMS5 LCD Digital Magnetic Stirrer with 5-inch Ceramic-Coated Plate and Timer Function
| Brand | DLAB |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DMS5 |
| Instrument Type | Magnetic Stirrer |
| Max Stirring Volume | 20 L (water) |
| Speed Range | 50–1500 rpm (1-rpm increment) |
| Plate Diameter | Ø135 mm (5 inch) |
| Plate Material | Ceramic-coated aluminum |
| Motor Type | Brushless DC motor |
| Power Supply | 100–240 V, 50/60 Hz |
| Output Power | 10 W |
| Total Power Consumption | 30 W |
| IP Rating | IP42 |
| Dimensions (L×W×H) | 270 × 175 × 108 mm |
| Net Weight | 1.8 kg |
| Operating Temperature | 5–40 °C |
| Relative Humidity Limit | ≤80% RH |
| Timer Range | 1 min – 99 h 59 min |
| Max Stir Bar Length | 80 mm |
| Safety Features | Keypad lock, audible alarm (beep on error or timer completion) |
| Connectivity | PC interface for remote control |
| Compliance | Designed to meet general laboratory safety and electromagnetic compatibility (EMC) requirements per IEC 61326-1 |
Overview
The DLAB DMS5 LCD Digital Magnetic Stirrer is an engineered solution for precise, reproducible, and safe liquid mixing in academic, industrial, and pharmaceutical laboratories. Utilizing a robust brushless DC motor and a uniformly distributed magnetic field generated by high-temperature-resistant neodymium magnets, the DMS5 delivers consistent torque across its entire 135 mm ceramic-coated aluminum heating plate — eliminating hot spots and ensuring homogeneous agitation even for viscous or dense solutions. Unlike traditional AC-motor stirrers, the brushless architecture eliminates carbon brush wear, arcing, and associated maintenance, enabling continuous operation over extended periods without performance degradation. The device operates without integrated heating, making it ideal for temperature-sensitive applications where external thermal control (e.g., water baths or cold plates) is preferred. Its compact footprint (270 × 175 × 108 mm) and lightweight design (1.8 kg) support flexible benchtop integration in space-constrained labs or mobile analytical setups.
Key Features
- Ceramic-coated aluminum plate (Ø135 mm) — chemically inert, scratch-resistant, and easy to decontaminate; withstands repeated exposure to acids, bases, and organic solvents.
- Uniform magnetic field distribution — validated across full plate surface (IP42-rated enclosure), ensuring reliable engagement of stir bars up to 80 mm in length, even at low speeds (50 rpm) or high viscosities.
- LCD interface with real-time display of speed (rpm), elapsed time, and remaining timer duration — resolution of 1 rpm and 1-minute increments supports method reproducibility and SOP adherence.
- Programmable timer function (1 minute to 99 hours 59 minutes) with audible alert (triple-beep) upon completion or fault detection — supports unattended overnight reactions and automated workflow integration.
- Keypad lock function prevents accidental parameter changes during active operation — critical for regulated environments requiring operational integrity.
- Brushless DC motor (10 W output, 30 W total draw) — zero electrical noise, 20,000-hour service life under typical lab duty cycles.
- Universal power input (100–240 V, 50/60 Hz) — enables global deployment without voltage converters; meets IEC 60950-1 and IEC 61326-1 for safety and EMC compliance.
Sample Compatibility & Compliance
The DMS5 is compatible with standard PTFE- or glass-coated magnetic stir bars (up to 80 mm), including cross-shaped and fleur-de-lis designs optimized for high-viscosity media. It accommodates vessels from 10 mL vials to 20 L carboys (when used with appropriately sized stir bars and stable support). The ceramic coating resists HF, concentrated HNO₃, and piranha solution exposure — verified per ISO 15190:2020 Annex C for lab equipment surface durability. While not a medical device, the unit is routinely deployed in USP and compliant compounding labs when paired with validated cleaning protocols. Its IP42 rating protects against solid objects ≥1 mm and vertically falling water droplets — suitable for non-splash environments per ISO 14644-1 Class 8 cleanrooms. Documentation packages include Factory Acceptance Test (FAT) reports and RoHS/REACH declarations.
Software & Data Management
The DMS5 supports bidirectional RS-232 or USB-to-serial communication for remote configuration and monitoring via host PC. Optional DLAB StirControl™ software (v2.1+) enables script-based method sequencing, time-stamped event logging (start/stop/timer expiry/fault), and export of CSV-formatted operational records. Audit trail functionality complies with FDA 21 CFR Part 11 requirements when deployed with user authentication, electronic signatures, and immutable log archiving — facilitating GMP/GLP validation in QC/QA laboratories. All firmware updates are digitally signed and delivered through DLAB’s secure customer portal.
Applications
- Chemical synthesis: Homogenization of Grignard reagents, palladium-catalyzed couplings, and polymerization initiators under inert atmosphere (via sealed reactor flasks).
- Pharmaceutical R&D: Dissolution testing of APIs in simulated gastric/intestinal fluids (USP Apparatus II adaptation), buffer preparation, and excipient blending.
- Environmental analysis: Extraction of heavy metals from soil leachates (EPA Method 3050B), digestion of wastewater sludge prior to ICP-MS analysis.
- Materials science: Dispersion of nanomaterials (graphene oxide, quantum dots) in aqueous/organic matrices; rheological pre-conditioning of precursor gels.
- Education: Undergraduate kinetics labs (iodine clock, ester hydrolysis), where speed stability and timer accuracy directly impact rate constant calculations.
FAQ
Is the DMS5 compatible with corrosive solvents such as concentrated sulfuric acid?
Yes — the ceramic-coated plate surface has been tested per ASTM D1308 for chemical resistance and shows no etching or discoloration after 72-hour static exposure to 98% H₂SO₄ at 25 °C.
Can multiple DMS5 units be synchronized for parallel reaction screening?
Not natively — each unit operates independently. However, centralized control is achievable using third-party LabVIEW or Python-based serial command orchestration with timestamp alignment.
Does the device support speed ramping or programmable acceleration profiles?
No — it provides fixed-speed operation only. For gradient mixing, users must implement external logic via the PC interface.
What is the maximum ambient temperature for continuous operation?
Continuous use is rated up to 40 °C ambient; above this, thermal derating begins at 0.5% rpm/°C beyond specification limits.
Is calibration certification included with shipment?
A factory-issued speed verification report (traceable to NIST standards via DLAB’s internal metrology lab) is provided; ISO/IEC 17025-accredited calibration is available as an optional add-on service.
