DB-2 Stainless Steel Electric Heating Plate with Digital Temperature Control
| Origin | Jiangsu, China |
|---|---|
| Manufacturer Type | Distributor |
| Model | DB-2 |
| Price | USD 110 (FOB) |
| Construction | 304 Stainless Steel Top Plate |
| Temperature Range | Ambient to 300 °C |
| Working Surface Dimensions | 300 mm × 200 mm |
| Heating Power | 800 W |
| Control Type | Digital PID Controller with LED Display |
| Temperature Stability | ±2 °C at 250 °C (typical, load-dependent) |
| Surface Flatness | ≤0.1 mm/m |
| Electrical Supply | 220–240 V AC, 50/60 Hz |
| Safety Features | Over-temperature cut-off, thermal fuse, non-slip rubber feet |
Overview
The DB-2 Stainless Steel Electric Heating Plate is a precision-engineered benchtop thermal platform designed for consistent, contamination-free heating in analytical sample preparation, digestion, evaporation, and reagent warming workflows. Operating on resistive heating principles, it delivers uniform thermal energy across its robust 304 stainless steel top plate—engineered for chemical resistance, mechanical durability, and minimal thermal distortion. Unlike open-coil or ceramic plates, the solid stainless steel surface prevents sample spill infiltration, simplifies cleaning, and ensures long-term calibration stability under repeated thermal cycling. Its ambient-to-300 °C operating range supports common acid digestion protocols (e.g., HNO₃/HCl mixtures), solvent removal, and controlled drying of geological, environmental, and biological matrices—making it compatible with standard EPA, ISO 11466, and ASTM D3682 digestion procedures when integrated into validated lab workflows.
Key Features
- 304 stainless steel top plate with electropolished finish for corrosion resistance and ease of decontamination
- Digital PID temperature controller with 0.1 °C resolution and LED display for real-time setpoint and actual temperature monitoring
- Thermal uniformity optimized via embedded high-density heating elements and aluminum core heat distribution layer
- Over-temperature protection circuit with independent thermal cutoff (10 °C above setpoint limit) and redundant thermal fuse
- Non-slip, vibration-dampening rubber feet for stable operation on analytical balances or fume hood surfaces
- Low electromagnetic emission design compliant with IEC 61326-1 for use near sensitive instrumentation (e.g., ICP-MS, AAS)
Sample Compatibility & Compliance
The DB-2 accommodates standard laboratory vessels including borosilicate glass beakers (50–1000 mL), PTFE digestion tubes, quartz crucibles, and ceramic evaporating dishes. Its flat, non-porous surface eliminates crevices where residual acids or particulates can accumulate—critical for trace-metal analysis requiring low blank levels. While the unit itself carries no CE or UL certification as a standalone device (intended for integration into larger lab systems), its electrical design conforms to IEC 61010-1 safety requirements for laboratory equipment. When used within GLP- or GMP-regulated environments, temperature verification per ISO/IEC 17025 can be performed using NIST-traceable PT100 probes; documented calibration records support audit readiness for FDA 21 CFR Part 11–aligned quality systems.
Software & Data Management
The DB-2 operates as a stand-alone analog/digital hybrid instrument without proprietary software or network connectivity. Temperature setpoints and real-time readings are managed locally via front-panel controls. For laboratories requiring electronic recordkeeping, optional RS-232 or 4–20 mA analog output modules (available separately) enable integration with Lab Information Management Systems (LIMS) or SCADA platforms. When paired with external data loggers (e.g., Omega OM-DAQPRO-5300), time-stamped temperature profiles—including ramp rates, dwell times, and deviation alerts—can be exported in CSV format for compliance reporting and method validation documentation.
Applications
- Acid digestion of soil, sediment, and plant tissue prior to ICP-OES or ICP-MS analysis
- Controlled evaporation of aqueous extracts in pesticide residue testing (AOAC 2007.01)
- Pre-heating and maintaining reaction temperature during Kjeldahl digestion
- Warming reagents and standards to minimize thermal shock during titration or colorimetric assays
- Drying filter papers and gravimetric precipitates under reproducible thermal conditions
- Supporting ASTM D5191 vapor pressure testing by stabilizing sample bath temperature
FAQ
Is the DB-2 suitable for use inside a fume hood?
Yes—the unit is rated for continuous operation in ventilated enclosures; its sealed electronics and stainless steel housing resist corrosive vapors.
What is the recommended calibration frequency?
Per ISO/IEC 17025, verify temperature accuracy before each critical batch or daily for high-throughput labs using a calibrated PT100 probe and reference thermometer.
Can the DB-2 be used with magnetic stirrers?
No—it lacks integrated stirring functionality; however, its flat surface is compatible with external overhead stirrers or stir bars placed beneath vessels.
Does it meet RoHS or REACH requirements?
Yes—materials of construction comply with EU Directive 2011/65/EU (RoHS2) and Regulation (EC) No 1907/2006 (REACH) SVHC screening.
What maintenance is required?
Wipe surface with mild detergent after each use; inspect thermal cutoff function annually using a calibrated heat source and multimeter.
