1. Technical Specification Matrix: DaiHan HP-20D vs. HP-30D
Both models feature reinforced mechanical housings optimized for continuous operational cycles, offering exceptional chemical resistance and efficient heat transfer.
| Technical Parameter | Model HP-20D | Model HP-30D |
|---|---|---|
| Heating Top Plate Dimensions | 180 × 180 mm | 260 × 260 mm |
| Body Housing Material | Powder-Coated Die-Cast Aluminum | Powder-Coated Steel Sheet |
| Plate Material Structure | Ceramic-Coated Aluminum | Ceramic-Coated Aluminum |
| Maximum Temperature Limit | Up to 380°C | Up to 380°C |
| Heating Power Output | 600 W | 1.2 kW (1200 W) |
| Overall Dimensions (W×D×H) | 206 × 307 × 99 mm | 286 × 387 × 99 mm |
| Net Weight | 2.8 kg | 3.3 kg |
The instruments operate reliably in ambient conditions ranging from 5°C to 50°C with relative humidity up to 85%. Fully compliant with international CE safety standards, each unit includes a factory test certificate traceable via an individual serial number.
2. Patented Jog-Shuttle Control System & ±0.3°C Precision Mechanism
Technical Context of ±0.3°C Precision: The ±0.3°C parameter specifies the controller's processing accuracy at the setpoint under standard manufacturer test conditions. In practical laboratory applications, the actual liquid temperature inside a vessel varies from the plate surface temperature depending on vessel geometry, liquid volume, and heat transfer efficiency. For protocols requiring rigorous liquid temperature monitoring, laboratories should select the Package Set configuration featuring an external temperature probe.
3. Chemical-Resistant Ceramic-Coated Top Plate & Heat Uniformity
The heating plate combines a high-conductivity aluminum alloy core with an outer ceramic coating that resists acids, harsh solvents, and chemical degradation while remaining easy to clean.
Temperature uniformity across the plate surface exhibits less than 10% variance at ambient conditions as certified by factory testing. To maintain maximum repeatability across multi-sample runs:
- Position sample vessels centrally on the heating plate surface.
- Utilize flat-bottomed glassware to maximize conductive heat transfer area.
- Verify internal liquid temperatures using an external sensor before initiating critical analytical procedures.
4. Comprehensive Safety Mechanisms & Sample Protection Features
5. Model Selection Guide: HP-20D vs. HP-30D & Unit vs. Package Set
Standard Selection Criteria for Research Laboratories
Selection by Plate Size & Heating Power:
- DaiHan HP-20D (180×180 mm Plate, 600W): Compact footprint (2.8 kg), ideal for benchtop space conservation, smaller vessels, or single/dual sample processing.
- DaiHan HP-30D (260×260 mm Plate, 1200W): Expanded heating surface with high power capacity (1.2 kW), optimized for large-volume flasks or simultaneous multi-vessel heating.
Selection by Operational Configuration:
- Unit Only: Suited for standard heating and drying applications where top plate temperature and run times are pre-standardized.
- Package Set: Includes an SS500 external PT100 probe, support rod, and holder clamp. Essential for reaction monitoring requiring direct, real-time liquid temperature control.
Imported from South Korea, maximum temperature 380°C, chemical-resistant ceramic-coated top plate, patented Jog-Shuttle control.
6. DaiHan MSH Series: Combined Heating & Magnetic Stirring Solutions
When laboratory workflows demand simultaneous heating and continuous magnetic agitation, DaiHan offers specialized digital hotplate magnetic stirrers: MSH-20D (180×180 mm plate) and MSH-30D (260×260 mm plate).
An advanced LCD screen displays real-time stirring speed, power bar indicators, and operational status. The MSH series incorporates automatic temperature offset functions. The MSH-20D housing is constructed from die-cast aluminum, while the MSH-30D features a heavy-duty powder-coated steel body. Laboratory engineers should consult catalog speed ranges (RPM) and stirring capacity limits prior to selection.
Combines 380°C heating with powerful magnetic stirring, automatic temperature offset, digital speed and power indicators.
7. High-Temperature (>380°C) & Large-Surface Heating Solutions
For specialized procedures exceeding 380°C or demanding high-throughput sample preparation, dedicated alternative configurations are available:
- MaXtir 500 Series (Up to 500°C Heating): Features a 200×200 mm solid ceramic glass top plate providing absolute chemical resistance, extreme thermal durability, and a hot top LED safety warning light active above 50°C.
- HP-LP Large Surface Series (310×620 mm Plate): Extra-wide heating area accommodating dozens of samples simultaneously, equipped with an integrated or remote digital PID controller.
Reaches up to 500°C, solid ceramic glass plate with total chemical immunity, integrated residual heat LED alert for maximum safety.
8. Critical Operational Safety Guidelines for Laboratory Hotplates
- Never Place Flammable Solvents Directly on the Plate: Volatile organic solvents and flammable liquids must be heated using water/oil baths or certified explosion-proof equipment.
- Prevent Boiling Dry Conditions: When setting extended timer programs, calculate liquid evaporation rates to avoid glass fracture caused by dry boiling.
- Ensure Proper Conductive Contact: Always use flat-bottomed vessels sized appropriately for the plate surface area to maximize thermal transfer efficiency.
- Follow Safe Cleaning Protocols: Clean the unit only after the top plate has cooled completely. Never pour cold liquids onto a hot ceramic plate to prevent thermal shock fractures.
