Jiayuan MINIB-100F Portable Heated Metal Block Thermostat
| Brand | Jiayuan |
|---|---|
| Origin | Beijing, China |
| Model | MINIB-100F |
| Temperature Range | Ambient +5°C to 100°C |
| Temperature Accuracy | ≤ ±0.5°C at 100°C |
| Temperature Uniformity | ≤ ±0.3°C across block surface (at 40°C delta) |
| Heating Time | ≤15 min (20°C to 100°C) |
| Display Resolution | 0.1°C |
| Timer Range | 0–999 min |
| Power Input | 24 V DC |
| Max Power Consumption | 60 W |
| Weight | ≤1 kg |
| Cooling Method | Integrated axial fan |
| Hot Lid | Not included |
| Module Compatibility | MINI-A to MINI-G interchangeable blocks |
Overview
The Jiayuan MINIB-100F Portable Heated Metal Block Thermostat is a compact, microprocessor-controlled dry-block heating system engineered for precise thermal management of small-volume samples in molecular biology, clinical diagnostics, and quality control laboratories. Unlike water baths, this metal bath employs solid aluminum heating blocks with high thermal conductivity and low thermal inertia, enabling rapid, stable, and contamination-free temperature control. Its design follows the fundamental principle of conductive heat transfer—samples inserted into standardized well modules achieve thermal equilibrium via direct metal-to-tube contact, eliminating evaporation, condensation, or cross-contamination risks associated with liquid media. The unit operates within a validated range of ambient +5°C to 100°C, making it suitable for enzyme activation, serum coagulation, DNA denaturation, reagent pre-warming, and sample thawing protocols requiring reproducible, non-vibratory heating environments.
Key Features
- Compact footprint (≤1 kg total mass) and 24 V DC input enable operation from vehicle power systems, field-deployable labs, or benchtop spaces with limited utility access.
- Dual digital display showing real-time block temperature and countdown timer; supports user-accessible offset calibration to compensate for sensor drift or module-specific thermal lag.
- Integrated axial cooling fan provides active heat dissipation—reducing cooldown time significantly compared to passive air-cooled alternatives—enhancing throughput in sequential heating/cooling workflows.
- Over-temperature protection circuitry automatically deactivates heating elements if internal sensor readings exceed safe thresholds, complying with IEC 61010-1 Class II safety requirements for laboratory electrical equipment.
- Modular well configuration supports rapid interchange of standardized aluminum blocks (MINI-A through MINI-G), facilitating cleaning, sterilization (autoclavable up to 121°C), and application-specific optimization without tooling.
- Self-diagnostic firmware continuously monitors sensor integrity, power supply stability, and thermal response; triggers audible alarm and display alert upon fault detection.
Sample Compatibility & Compliance
The MINIB-100F accommodates common lab consumables—including 0.2 mL PCR tubes, 0.5–2.0 mL microcentrifuge tubes, 15–50 mL conical tubes, and standard 12.5 × 12.5 mm cuvettes—via precision-machined, anodized aluminum modules. Each module is designed to minimize radial thermal gradients, achieving ≤±0.3°C uniformity across all wells under steady-state conditions (per ISO 8573-1 Annex B thermal mapping methodology). While the device itself does not include a heated lid, its open-top architecture permits unobstructed access for pipetting or optical monitoring. It meets general-purpose laboratory equipment requirements under GB/T 29875–2013 (Chinese national standard for dry-block thermostats) and supports GLP-compliant documentation when used with external audit-trail-capable data loggers.
Software & Data Management
The MINIB-100F operates as a standalone instrument with no embedded software or network interface. All control logic resides in its onboard microcontroller, ensuring deterministic response and immunity to OS-level vulnerabilities. Temperature setpoints, timers, and calibration offsets are stored in non-volatile memory with retention exceeding 10 years. For regulatory environments requiring electronic records (e.g., FDA 21 CFR Part 11), users may integrate the unit with third-party USB or Bluetooth-enabled temperature data loggers that provide timestamped, encrypted, and tamper-evident thermal profiles. No proprietary drivers or cloud dependencies are required.
Applications
- Thermal activation of restriction enzymes and ligases prior to digestion-ligation reactions.
- Controlled coagulation of serum or plasma samples for clinical chemistry assays.
- Rapid thawing of cryopreserved cell suspensions or enzyme stocks without thermal shock.
- Pre-heating of reagents (e.g., agarose solutions, staining buffers) to minimize precipitation or viscosity changes.
- Incubation support for lateral flow assay development where consistent, low-footprint heating is critical.
- Field-based point-of-care testing (POCT) platforms requiring battery-compatible, vibration-insensitive thermal control.
FAQ
Is the MINIB-100F compatible with 24 V vehicle power systems?
Yes—it accepts regulated 24 V DC input with reverse-polarity protection, enabling deployment in mobile diagnostic units or remote research vehicles.
Can the heating block be autoclaved?
No—the entire unit is not autoclavable; however, individual aluminum modules (MINI-A to MINI-G) are autoclavable at 121°C for 20 minutes and chemically resistant to 70% ethanol and 0.5% sodium hypochlorite.
Does the device support external temperature probe input for sample-core monitoring?
No—temperature sensing is internal to the block; for sample-specific validation, users must employ independent calibrated thermocouples or fiber-optic probes placed directly in representative tubes.
What is the expected service life of the integrated cooling fan?
Rated for >30,000 hours of continuous operation under nominal load (IEC 60068-2-64 compliant endurance testing).
Are replacement modules available separately?
Yes—all MINI-series blocks are sold as field-replaceable components with documented dimensional tolerances and thermal performance certificates.
