Hanuo HNDKT200-2 Precision Metal Block Heater
| Brand | Hanuo |
|---|---|
| Origin | Shanghai, China |
| Model | HNDKT200-2 |
| Temperature Range | Ambient +5°C to 150°C |
| Temperature Accuracy | ±0.5°C (at 40–100°C) |
| Temperature Uniformity | ≤±0.5°C across block surface |
| Block Temperature Gradient at 40°C | ≤0.3°C |
| Display Resolution | 0.1°C |
| Timer Range | 0–99 h 59 min |
| Heating Time | ≤30 min (20°C → 150°C) |
| Net Weight | 2 kg |
| Dimensions (W×D×H) | 95.5 × 76.5 × 50 mm (standard block) |
| Safety Features | Over-temperature protection, self-diagnostic error detection with audible alarm, calibration offset adjustment |
Overview
The Hanuo HNDKT200-2 Precision Metal Block Heater is a microprocessor-controlled dry bath instrument engineered for stable, uniform, and repeatable thermal incubation of samples in molecular biology, clinical diagnostics, and quality control laboratories. Unlike traditional water baths—prone to contamination, evaporation, and inconsistent heat transfer—the HNDKT200-2 utilizes solid aluminum heating blocks with optimized thermal mass and conduction pathways to deliver rapid, precise, and maintenance-free temperature control across a wide operating range (ambient +5°C to 150°C). Its design eliminates liquid media entirely, reducing cross-contamination risk and enabling operation in sterile environments, biosafety cabinets, and cleanrooms. The unit complies with fundamental thermal safety and electromagnetic compatibility requirements per IEC 61010-1 for laboratory electrical equipment.
Key Features
- Real-time digital display of setpoint temperature and countdown timer with 0.1°C resolution and 1-minute time granularity
- Dual-stage programming: independent temperature and time settings for sequential or multi-step protocols
- Integrated self-diagnostic system that detects sensor failure, heater open-circuit, or thermal runaway—triggering visual indicator and audible alarm
- User-accessible temperature calibration offset (±5.0°C range) to correct for long-term drift or lab-specific ambient deviations
- Modular block interchangeability: standardized mounting interface allows tool-free replacement of pre-configured blocks for tubes (0.2–40 mm diameter), PCR strips, 0.5/1.5/2.0 mL vials, and 96-well microplates
- Passive cooling design with aluminum alloy housing and finned heat sink ensures thermal stability during extended operation and safe surface temperatures below 60°C under normal load
- Over-temperature cut-off circuit (independent of main controller) activates at ≥160°C to prevent sample degradation or fire hazard
Sample Compatibility & Compliance
The HNDKT200-2 supports a broad spectrum of consumables via interchangeable blocks—including standard conical tubes (6–28 mm), centrifuge tubes (up to 40 mm), PCR tube strips, low-profile 0.2 mL skirted plates, and flat-bottom 96-well ELISA plates. All blocks are CNC-machined from anodized 6061-T6 aluminum for corrosion resistance, thermal homogeneity, and autoclavability (up to 121°C, 20 min, non-electronic components only). The device meets essential performance criteria referenced in ISO 13485 (for in vitro diagnostic manufacturing environments) and supports GLP-compliant workflows when used with validated SOPs and calibrated traceable thermometers (e.g., NIST-traceable RTDs). While not FDA 21 CFR Part 11–certified out-of-the-box, audit-ready usage is achievable through external logging systems and manual calibration records.
Software & Data Management
The HNDKT200-2 operates as a standalone instrument with no proprietary software dependency. All operational parameters—including temperature setpoint, hold duration, and calibration offset—are configured directly via front-panel membrane keys. No USB, Bluetooth, or RS-232 connectivity is provided; this architecture enhances reliability, reduces cybersecurity exposure, and aligns with ISO/IEC 17025 Annex A.3 requirements for equipment integrity in accredited testing labs. For laboratories requiring electronic data capture, integration with third-party environmental monitoring systems (e.g., Vaisala viewLinc, DeltaTrak BlueView) is possible using optional external PT100 probes connected to compatible data loggers.
Applications
- Enzyme inactivation and heat denaturation prior to electrophoresis or immunoassay
- Plasma or serum coagulation assays (e.g., fibrinogen quantification at 37°C)
- Thermal lysis of bacterial and mammalian cells in nucleic acid extraction workflows
- Pre-heating reagents for PCR master mixes and restriction digests
- Controlled drying of thin-layer chromatography (TLC) plates at 60–80°C
- Incubation of cell culture media supplements (e.g., growth factors, antibiotics) before addition to sensitive cultures
- Standardization of viscosity reference standards in QC labs (within ±0.5°C tolerance band)
FAQ
What is the maximum recommended continuous operating temperature?
The unit is rated for continuous operation up to 150°C; however, sustained use above 120°C may reduce long-term thermal sensor accuracy and block surface anodization integrity. For optimal longevity, limit >130°C exposure to ≤2 hours per session.
Can the HNDKT200-2 be used inside a CO₂ incubator?
No. The device is not rated for humidified or high-CO₂ atmospheres. Condensation ingress and corrosion risk invalidate warranty and compromise electrical safety.
Is block calibration traceable to national standards?
The instrument itself does not include factory calibration certificates. Users must perform initial verification using a NIST-traceable thermometer (e.g., Fluke 1523 with probe) and document results per ISO/IEC 17025 Clause 6.5.
Are custom block geometries available?
Yes—Hanuo offers OEM block fabrication for non-standard tube formats or specialized plate layouts, subject to minimum order quantity and mechanical feasibility review.
Does the unit meet CE or UKCA marking requirements?
The HNDKT200-2 complies with the EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. CE marking is affixed to units distributed within the EEA; UKCA marking requires separate conformity assessment by a UK-approved body and is not pre-applied.
